Quarterly report pursuant to Section 13 or 15(d)

Note 15 - Financial Information About the Parent, the Issuer and the Guarantors (Details) - Condensed Consolidating Statement Of Cash Flows

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Note 15 - Financial Information About the Parent, the Issuer and the Guarantors (Details) - Condensed Consolidating Statement Of Cash Flows (USD $)
In Thousands, unless otherwise specified
 9 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Note 15 - Financial Information About the Parent, the Issuer and the Guarantors (Details) - Condensed Consolidating Statement Of Cash Flows [Line Items]    
Net cash provided by (used in) operating activities $ 40,019 $ 44,445
Cash flows from investing activities:    
Capital expenditures (12,588) (16,545)
Acquisitions   (598)
Proceeds from the disposal of property, plant and equipment 2,667 3,226
Change in restricted cash and investments 6,526 (14)
Purchase of marketable securities (17,500) (17,547)
Proceeds from the sale of marketable securities 12,323 7,990
Other 253 1,333
Net cash provided by (used in) investing activities (8,319) (22,155)
Cash flows from financing activities:    
Payments on long-term debt (358) (187)
Dividends paid (8,399) (19,617)
Other 314 1,423
Net cash provided by (used in) financing activities (8,443) (18,381)
Effect of exchange rate changes on cash (54) 15
Net increase (decrease) in cash and cash equivalents 23,203 3,924
Cash & cash equivalents at beginning of period 72,601 79,721
Cash & cash equivalents at end of period 95,804 83,645
Parent Company [Member]
    
Note 15 - Financial Information About the Parent, the Issuer and the Guarantors (Details) - Condensed Consolidating Statement Of Cash Flows [Line Items]    
Net cash provided by (used in) operating activities 8,136 18,360
Cash flows from financing activities:    
Dividends paid (8,399) (19,617)
Other 263 1,257
Net cash provided by (used in) financing activities (8,136) (18,360)
Subsidiary Issuer [Member]
    
Note 15 - Financial Information About the Parent, the Issuer and the Guarantors (Details) - Condensed Consolidating Statement Of Cash Flows [Line Items]    
Net cash provided by (used in) operating activities 21,223 12,214
Cash flows from investing activities:    
Capital expenditures (314) (1,115)
Proceeds from the disposal of property, plant and equipment 24 51
Change in restricted cash and investments 6,526 (14)
Purchase of marketable securities (17,500) (17,547)
Proceeds from the sale of marketable securities 12,323 7,990
Other 253 783
Net cash provided by (used in) investing activities 1,312 (9,852)
Cash flows from financing activities:    
Other 51 166
Net cash provided by (used in) financing activities 51 166
Net increase (decrease) in cash and cash equivalents 22,586 2,528
Cash & cash equivalents at beginning of period 57,307 64,946
Cash & cash equivalents at end of period 79,893 67,474
Guarantor Subsidiaries [Member]
    
Note 15 - Financial Information About the Parent, the Issuer and the Guarantors (Details) - Condensed Consolidating Statement Of Cash Flows [Line Items]    
Net cash provided by (used in) operating activities 8,818 10,950
Cash flows from investing activities:    
Capital expenditures (11,159) (13,165)
Acquisitions   (598)
Proceeds from the disposal of property, plant and equipment 2,643 3,175
Other   550
Net cash provided by (used in) investing activities (8,516) (10,038)
Cash flows from financing activities:    
Payments on long-term debt (358) (187)
Net cash provided by (used in) financing activities (358) (187)
Net increase (decrease) in cash and cash equivalents (56) 725
Cash & cash equivalents at beginning of period 12,463 12,276
Cash & cash equivalents at end of period 12,407 13,001
Non-Guarantor Subsidiaries [Member]
    
Note 15 - Financial Information About the Parent, the Issuer and the Guarantors (Details) - Condensed Consolidating Statement Of Cash Flows [Line Items]    
Net cash provided by (used in) operating activities 1,842 2,921
Cash flows from investing activities:    
Capital expenditures (1,115) (2,265)
Net cash provided by (used in) investing activities (1,115) (2,265)
Cash flows from financing activities:    
Effect of exchange rate changes on cash (54) 15
Net increase (decrease) in cash and cash equivalents 673 671
Cash & cash equivalents at beginning of period 2,831 2,499
Cash & cash equivalents at end of period 3,504 3,170
Consolidated Entities [Member]
    
Note 15 - Financial Information About the Parent, the Issuer and the Guarantors (Details) - Condensed Consolidating Statement Of Cash Flows [Line Items]    
Net cash provided by (used in) operating activities 40,019 44,445
Cash flows from investing activities:    
Capital expenditures (12,588) (16,545)
Acquisitions   (598)
Proceeds from the disposal of property, plant and equipment 2,667 3,226
Change in restricted cash and investments 6,526 (14)
Purchase of marketable securities (17,500) (17,547)
Proceeds from the sale of marketable securities 12,323 7,990
Other 253 1,333
Net cash provided by (used in) investing activities (8,319) (22,155)
Cash flows from financing activities:    
Payments on long-term debt (358) (187)
Dividends paid (8,399) (19,617)
Other 314 1,423
Net cash provided by (used in) financing activities (8,443) (18,381)
Effect of exchange rate changes on cash (54) 15
Net increase (decrease) in cash and cash equivalents 23,203 3,924
Cash & cash equivalents at beginning of period 72,601 79,721
Cash & cash equivalents at end of period $ 95,804 $ 83,645