Quarterly report pursuant to Section 13 or 15(d)

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

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Note 15 - Financial Information About the Parent, the Issuer and the Guarantors (Detail) - Condensed Consolidating Statement Of Cash Flows (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Net cash provided by (used in) operating activities $ 6,689 $ 6,252
Cash flows from investing activities:    
Capital expenditures 8,318 3,375
Acquisitions 598  
Proceeds from the disposal of property, plant and equipment 711 70
Change in restricted cash and investments 6 (996)
Purchase of marketable securities 4,677 261
Proceeds from the sale of marketable securities 2,885 1,965
Other (60) (252)
Net cash provided by (used in) investing activities (9,943) (353)
Cash flows from financing activities:    
Payments on long-term debt 62 2,190
Purchases and other retirements of company stock   847
Dividends paid 2,594 2,017
Net cash provided by (used in) financing activities (2,609) (5,054)
Effect of exchange rate changes on cash 55 12
Net decrease in cash and cash equivalents (5,808) 857
Cash and cash equivalents 73,913 79,376
Parent Company [Member]
    
Net cash provided by (used in) operating activities 2,547 2,864
Cash flows from financing activities:    
Purchases and other retirements of company stock   (847)
Proceeds from issuance of common stock 47  
Dividends paid (2,594) (2,017)
Net cash provided by (used in) financing activities (2,547) (2,864)
Subsidiary Issuer [Member]
    
Net cash provided by (used in) operating activities (5,061) 2,304
Cash flows from investing activities:    
Capital expenditures (768) (240)
Change in restricted cash and investments (6) 996
Purchase of marketable securities (4,677) (261)
Proceeds from the sale of marketable securities 2,885 1,965
Other 60 252
Net cash provided by (used in) investing activities (2,506) 2,712
Cash flows from financing activities:    
Payments on long-term debt   (1,980)
Net cash provided by (used in) financing activities   (1,980)
Net decrease in cash and cash equivalents (7,567) 3,036
Cash and cash equivalents 57,379 72,799
Guarantor Subsidiaries [Member]
    
Net cash provided by (used in) operating activities 8,333 (546)
Cash flows from investing activities:    
Capital expenditures (7,163) (2,328)
Acquisitions (598)  
Proceeds from the disposal of property, plant and equipment 711 70
Net cash provided by (used in) investing activities (7,050) (2,258)
Cash flows from financing activities:    
Payments on long-term debt (62) (210)
Net cash provided by (used in) financing activities (62) (210)
Net decrease in cash and cash equivalents 1,221 (3,014)
Cash and cash equivalents 13,497 4,702
Non-Guarantor Subsidiaries [Member]
    
Net cash provided by (used in) operating activities 870 1,630
Cash flows from investing activities:    
Capital expenditures (387) (807)
Net cash provided by (used in) investing activities (387) (807)
Cash flows from financing activities:    
Effect of exchange rate changes on cash 55 12
Net decrease in cash and cash equivalents 538 835
Cash and cash equivalents 3,037 1,875
Consolidated Entities [Member]
    
Net cash provided by (used in) operating activities 6,689 6,252
Cash flows from investing activities:    
Capital expenditures (8,318) (3,375)
Acquisitions (598)  
Proceeds from the disposal of property, plant and equipment 711 70
Change in restricted cash and investments (6) 996
Purchase of marketable securities (4,677) (261)
Proceeds from the sale of marketable securities 2,885 1,965
Other 60 252
Net cash provided by (used in) investing activities (9,943) (353)
Cash flows from financing activities:    
Payments on long-term debt (62) (2,190)
Purchases and other retirements of company stock   (847)
Proceeds from issuance of common stock 47  
Dividends paid (2,594) (2,017)
Net cash provided by (used in) financing activities (2,609) (5,054)
Effect of exchange rate changes on cash 55 12
Net decrease in cash and cash equivalents (5,808) 857
Cash and cash equivalents $ 73,913 $ 79,376