Note 17 - Condensed Consolidating Balance Sheets (Details) - USD ($)
$ in Thousands
Nov. 30, 2015
May. 31, 2015
Parent Company [Member]    
CURRENT ASSETS:    
Cash and cash equivalents $ 6,596 $ 7,080
Trade accounts receivable, net of allowance for doubtful accounts of $1,866 and $1,669 at November 30, 2015 and May 31, 2015, respectively 30,767 30,442
Intercompany receivable 76,192 68,815
Inventories, net 19,872 18,361
Deferred income tax assets, current portion 2,511 2,512
Prepaid expenses and other current assets 4,482 5,178
Total current assets 140,420 132,388
PROPERTY AND EQUIPMENT, net 39,382 38,915
INVESTMENT IN SUBSIDIARIES 212,808 220,412
GOODWILL 744,149 744,149
INTANGIBLE ASSETS, net 533,162 557,133
DEFERRED FINANCING COSTS, net 22,864 26,399
OTHER ASSETS 14,837 14,533
Total assets 1,707,622 1,733,929
CURRENT LIABILITIES:    
Accounts payable 7,378 6,297
Intercompany payable 8,297 2,389
Accrued interest and interest rate swap liability 19,097 19,288
Accrued expenses and other current liabilities 7,662 13,758
Income taxes payable 30,055 30,061
Deferred revenue, current portion 1,796 1,498
Current portion of long-term debt, net of debt discounts 4,403 4,462
Total current liabilities 78,688 77,753
LONG-TERM DEBT, net of debt discounts 1,031,406 1,033,276
DEFERRED INCOME TAX LIABILITIES 218,802 223,232
OTHER LONG-TERM LIABILITIES 16,615 15,987
Total liabilities 1,345,511 1,350,248
SHAREHOLDERS' EQUITY:    
Total shareholders' equity 362,111 383,681
Total liabilities and shareholders' equity 1,707,622 1,733,929
Guarantor Subsidiaries [Member]    
CURRENT ASSETS:    
Cash and cash equivalents (365) (263)
Trade accounts receivable, net of allowance for doubtful accounts of $1,866 and $1,669 at November 30, 2015 and May 31, 2015, respectively 5,483 6,014
Intercompany receivable 21,372 24,201
Inventories, net 14,998 13,706
Deferred income tax assets, current portion 2,254 2,253
Prepaid expenses and other current assets 376 426
Total current assets 44,118 46,337
PROPERTY AND EQUIPMENT, net 12,971 13,849
INVESTMENT IN SUBSIDIARIES 5,020 5,021
GOODWILL 47,985 47,640
INTANGIBLE ASSETS, net $ 57,163 $ 59,164
DEFERRED FINANCING COSTS, net
OTHER ASSETS $ 194 $ 310
Total assets 167,451 172,321
CURRENT LIABILITIES:    
Accounts payable 3,386 2,604
Intercompany payable $ 93,823 $ 91,547
Accrued interest and interest rate swap liability
Accrued expenses and other current liabilities $ 4,697 $ 5,131
Income taxes payable $ (30,092) (30,074)
Deferred revenue, current portion 7
Current portion of long-term debt, net of debt discounts $ 1 7
Total current liabilities $ 71,815 $ 69,222
LONG-TERM DEBT, net of debt discounts
DEFERRED INCOME TAX LIABILITIES $ 851 $ 3,639
OTHER LONG-TERM LIABILITIES 12,461 11,908
Total liabilities 85,127 84,769
SHAREHOLDERS' EQUITY:    
Total shareholders' equity 82,324 87,552
Total liabilities and shareholders' equity 167,451 172,321
Non-Guarantor Subsidiaries [Member]    
CURRENT ASSETS:    
Cash and cash equivalents 8,836 11,546
Trade accounts receivable, net of allowance for doubtful accounts of $1,866 and $1,669 at November 30, 2015 and May 31, 2015, respectively 28,988 31,218
Intercompany receivable 13,325 8,861
Inventories, net 11,440 11,830
Deferred income tax assets, current portion 414 375
Prepaid expenses and other current assets 4,949 5,557
Total current assets 67,952 69,387
PROPERTY AND EQUIPMENT, net 19,873 20,810
INVESTMENT IN SUBSIDIARIES 3,018 3,019
GOODWILL 48,373 50,469
INTANGIBLE ASSETS, net $ 31,670 $ 33,997
DEFERRED FINANCING COSTS, net
OTHER ASSETS $ 381 $ 342
Total assets 171,267 178,024
CURRENT LIABILITIES:    
Accounts payable 2,920 4,965
Intercompany payable $ 8,769 $ 7,941
Accrued interest and interest rate swap liability
Accrued expenses and other current liabilities $ 5,412 $ 7,319
Income taxes payable 3,081 3,509
Deferred revenue, current portion $ 1,048 $ 1,198
Current portion of long-term debt, net of debt discounts
Total current liabilities $ 21,230 $ 24,932
LONG-TERM DEBT, net of debt discounts
DEFERRED INCOME TAX LIABILITIES $ 9,249 $ 9,616
OTHER LONG-TERM LIABILITIES 1,268 1,317
Total liabilities 31,747 35,865
SHAREHOLDERS' EQUITY:    
Total shareholders' equity 139,520 142,159
Total liabilities and shareholders' equity $ 171,267 $ 178,024
Consolidation, Eliminations [Member]    
CURRENT ASSETS:    
Cash and cash equivalents
Trade accounts receivable, net of allowance for doubtful accounts of $1,866 and $1,669 at November 30, 2015 and May 31, 2015, respectively
Intercompany receivable $ (110,889) $ (101,877)
Inventories, net (1,626) (2,050)
Deferred income tax assets, current portion $ 628 $ 791
Prepaid expenses and other current assets
Total current assets $ (111,887) $ (103,136)
PROPERTY AND EQUIPMENT, net
INVESTMENT IN SUBSIDIARIES $ (220,846) $ (228,452)
GOODWILL
INTANGIBLE ASSETS, net
DEFERRED FINANCING COSTS, net
OTHER ASSETS
Total assets $ (332,733) $ (331,588)
CURRENT LIABILITIES:    
Accounts payable
Intercompany payable $ (110,889) $ (101,877)
Accrued interest and interest rate swap liability
Accrued expenses and other current liabilities
Income taxes payable
Deferred revenue, current portion
Current portion of long-term debt, net of debt discounts
Total current liabilities $ (110,889) $ (101,877)
LONG-TERM DEBT, net of debt discounts
DEFERRED INCOME TAX LIABILITIES
OTHER LONG-TERM LIABILITIES
Total liabilities $ (110,889) $ (101,877)
SHAREHOLDERS' EQUITY:    
Total shareholders' equity (221,844) (229,711)
Total liabilities and shareholders' equity (332,733) (331,588)
Cash and cash equivalents 15,067 18,363
Trade accounts receivable, net of allowance for doubtful accounts of $1,866 and $1,669 at November 30, 2015 and May 31, 2015, respectively $ 65,238 $ 67,674
Intercompany receivable
Inventories, net $ 44,684 $ 41,847
Deferred income tax assets, current portion 5,807 5,931
Prepaid expenses and other current assets 9,807 11,161
Total current assets 140,603 144,976
PROPERTY AND EQUIPMENT, net $ 72,226 $ 73,574
INVESTMENT IN SUBSIDIARIES
GOODWILL $ 840,507 $ 842,258
INTANGIBLE ASSETS, net 621,995 650,294
DEFERRED FINANCING COSTS, net 22,864 26,399
OTHER ASSETS 15,412 15,185
Total assets 1,713,607 1,752,686
Accounts payable $ 13,684 $ 13,866
Intercompany payable
Accrued interest and interest rate swap liability $ 19,097 $ 19,288
Accrued expenses and other current liabilities 17,771 26,208
Income taxes payable 3,044 3,496
Deferred revenue, current portion 2,844 2,703
Current portion of long-term debt, net of debt discounts 4,404 4,469
Total current liabilities 60,844 70,030
LONG-TERM DEBT, net of debt discounts 1,031,406 1,033,276
DEFERRED INCOME TAX LIABILITIES 228,902 236,487
OTHER LONG-TERM LIABILITIES 30,344 29,212
Total liabilities 1,351,496 1,369,005
Total shareholders' equity 362,111 383,681
Total liabilities and shareholders' equity $ 1,713,607 $ 1,752,686