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Note 20 - Financial Information About the Parent, the Issuer and the Guarantors (Details) - Condensed Consolidating Statement of Cash Flows (USD $) | 12 Months Ended
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Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2012
Condensed Cash Flow Statements, Captions [Line Items] |  |  |
Net cash provided by operating activities | $ 59,889,000 | $ 61,301,000 | $ 37,701,000
Cash flows from investing activities: |  |  |
Capital expenditures | (19,305,000) | (19,005,000) | (22,884,000)
Acquisitions |  | (770,000) | (520,000)
Proceeds from the disposal of property, plant and equipment | 3,381,000 | 3,283,000 | 1,873,000
Change in restricted cash and investments | 6,926,000 | (17,000) | 975,000
Purchase of marketable securities | (18,268,000) | (18,247,000) | (3,647,000)
Proceeds from the sale of marketable securities | 14,883,000 | 11,165,000 | 7,230,000
Other | 325,000 | 1,990,000 | 816,000
Net cash used in investing activities | (12,058,000) | (21,601,000) | (16,157,000)
Cash flows from financing activities: |  |  |
Payments on long-term debt | (480,000) | (26,104,000) | (12,204,000)
Purchases and other retirements of company stock |  |  | (1,350,000)
Dividends paid | (11,297,000) | (22,220,000) | (8,062,000)
Other | 525,000 | 1,758,000 | 738,000
Net cash used in financing activities | (11,252,000) | (46,566,000) | (20,878,000)
Effect of exchange rate changes on cash | (4,000) | (254,000) | 536,000
Net increase (decrease) in cash and cash equivalents | 36,575,000 | (7,120,000) | 1,202,000
Cash & cash equivalents - beginning of year | 72,601,000 | 79,721,000 | 78,519,000
Cash & cash equivalents - end of year | 109,176,000 | 72,601,000 | 79,721,000
Parent Company [Member] |  |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |  |
Net cash provided by operating activities | 10,940,000 | 20,821,000 | 9,187,000
Cash flows from financing activities: |  |  |
Purchases and other retirements of company stock |  |  | (1,350,000)
Dividends paid | (11,297,000) | (22,220,000) | (8,062,000)
Other | 357,000 | 1,399,000 | 225,000
Net cash used in financing activities | (10,940,000) | (20,821,000) | (9,187,000)
Subsidiary Issuer [Member] |  |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |  |
Net cash provided by operating activities | 34,812,000 | 24,720,000 | 3,939,000
Cash flows from investing activities: |  |  |
Capital expenditures | (610,000) | (1,320,000) | (1,952,000)
Proceeds from the disposal of property, plant and equipment | 24,000 | 61,000 | 12,000
Change in restricted cash and investments | 6,926,000 | (17,000) | 975,000
Purchase of marketable securities | (18,268,000) | (18,247,000) | (3,647,000)
Proceeds from the sale of marketable securities | 14,883,000 | 11,165,000 | 7,230,000
Other | 325,000 | 1,440,000 | 305,000
Net cash used in investing activities | 3,280,000 | (6,918,000) | 2,923,000
Cash flows from financing activities: |  |  |
Payments on long-term debt |  | (25,800,000) | (11,917,000)
Other | 168,000 | 359,000 | 238,000
Net cash used in financing activities | 168,000 | (25,441,000) | (11,679,000)
Net increase (decrease) in cash and cash equivalents | 38,260,000 | (7,639,000) | (4,817,000)
Cash & cash equivalents - beginning of year | 57,307,000 | 64,946,000 | 69,763,000
Cash & cash equivalents - end of year | 95,567,000 | 57,307,000 | 64,946,000
Guarantor Subsidiaries [Member] |  |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |  |
Net cash provided by operating activities | 12,025,000 | 12,336,000 | 18,441,000
Cash flows from investing activities: |  |  |
Capital expenditures | (17,018,000) | (14,847,000) | (15,721,000)
Acquisitions |  | (770,000) | (520,000)
Proceeds from the disposal of property, plant and equipment | 3,357,000 | 3,222,000 | 1,861,000
Other |  | 550,000 | 511,000
Net cash used in investing activities | (13,661,000) | (11,845,000) | (13,869,000)
Cash flows from financing activities: |  |  |
Payments on long-term debt | (480,000) | (304,000) | (287,000)
Other |  |  | 275,000
Net cash used in financing activities | (480,000) | (304,000) | (12,000)
Net increase (decrease) in cash and cash equivalents | (2,116,000) | 187,000 | 4,560,000
Cash & cash equivalents - beginning of year | 12,463,000 | 12,276,000 | 7,716,000
Cash & cash equivalents - end of year | 10,347,000 | 12,463,000 | 12,276,000
Non-Guarantor Subsidiaries [Member] |  |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |  |
Net cash provided by operating activities | 2,112,000 | 3,424,000 | 6,134,000
Cash flows from investing activities: |  |  |
Capital expenditures | (1,677,000) | (2,838,000) | (5,211,000)
Net cash used in investing activities | (1,677,000) | (2,838,000) | (5,211,000)
Cash flows from financing activities: |  |  |
Effect of exchange rate changes on cash | (4,000) | (254,000) | 536,000
Net increase (decrease) in cash and cash equivalents | 431,000 | 332,000 | 1,459,000
Cash & cash equivalents - beginning of year | 2,831,000 | 2,499,000 | 1,040,000
Cash & cash equivalents - end of year | 3,262,000 | 2,831,000 | 2,499,000
Consolidated Entities [Member] |  |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |  |
Net cash provided by operating activities | 59,889,000 | 61,301,000 | 37,701,000
Cash flows from investing activities: |  |  |
Capital expenditures | (19,305,000) | (19,005,000) | (22,884,000)
Acquisitions |  | (770,000) | (520,000)
Proceeds from the disposal of property, plant and equipment | 3,381,000 | 3,283,000 | 1,873,000
Change in restricted cash and investments | 6,926,000 | (17,000) | 975,000
Purchase of marketable securities | (18,268,000) | (18,247,000) | (3,647,000)
Proceeds from the sale of marketable securities | 14,883,000 | 11,165,000 | 7,230,000
Other | 325,000 | 1,990,000 | 816,000
Net cash used in investing activities | (12,058,000) | (21,601,000) | (16,157,000)
Cash flows from financing activities: |  |  |
Payments on long-term debt | (480,000) | (26,104,000) | (12,204,000)
Purchases and other retirements of company stock |  |  | (1,350,000)
Dividends paid | (11,297,000) | (22,220,000) | (8,062,000)
Other | 525,000 | 1,758,000 | 738,000
Net cash used in financing activities | (11,252,000) | (46,566,000) | (20,878,000)
Effect of exchange rate changes on cash | (4,000) | (254,000) | 536,000
Net increase (decrease) in cash and cash equivalents | 36,575,000 | (7,120,000) | 1,202,000
Cash & cash equivalents - beginning of year | 72,601,000 | 79,721,000 | 78,519,000
Cash & cash equivalents - end of year | $ 109,176,000 | $ 72,601,000 | $ 79,721,000

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