Supplemental Guarantor Information Consolidating Condensed Balance Sheets (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Current Assets
Cash and cash equivalents	$ 20,618	$ 38,931	$ 21,260	$ 29,785
Trade receivables, net	163,664	160,414
Installment receivables, net	1,088	1,054
Inventories, net	150,975	155,876
Deferred income taxes	1,982	2,048
Due from Affiliate, Current	0	0
Other current assets	39,567	37,019
Total Current Assets	377,894	395,342
Investment in subsidiaries	0	0
Intercompany advances, net	0	0
Other Assets	6,435	19,053
Other Intangibles	34,119	38,070
Property and Equipment, net	80,427	85,555
Goodwill	386,627	425,711
Total Assets	885,502	963,731
Current Liabilities
Accounts payable	119,408	120,151
Accrued expenses	140,656	156,475
Accrued income taxes	12,410	12,634
Due to Affiliate, Current	0	0
Short-term debt and current maturities of long-term obligations	843	967
Total Current Liabilities	273,317	290,227
Long-Term Debt	22,066	19,377
Other Long-Term Obligations	83,196	88,805
Inercompany advances, net	0	0
Total Shareholders’ Equity	506,923	565,322
Total Liabilities and Shareholders’ Equity	885,502	963,731
The Company (Parent) [Member]
Current Assets
Cash and cash equivalents	4,801	7,340	2,733	1,401
Trade receivables, net	54,966	50,656
Installment receivables, net	0	0
Inventories, net	15,900	25,272
Deferred income taxes	0	0
Due from Affiliate, Current	10,816	10,007
Other current assets	7,849	8,134
Total Current Assets	94,332	101,409
Investment in subsidiaries	1,369,574	1,409,482
Intercompany advances, net	1,067,878	1,049,235
Other Assets	4,807	16,955
Other Intangibles	231	286
Property and Equipment, net	28,140	29,686
Goodwill	0	0
Total Assets	2,564,962	2,607,053
Current Liabilities
Accounts payable	52,840	49,040
Accrued expenses	43,316	52,022
Accrued income taxes	2,621	1,632
Due to Affiliate, Current	76,059	81,141
Short-term debt and current maturities of long-term obligations	0	0
Total Current Liabilities	174,836	183,835
Long-Term Debt	18,642	15,351
Other Long-Term Obligations	28,364	28,551
Inercompany advances, net	1,836,197	1,813,994
Total Shareholders’ Equity	506,923	565,322
Total Liabilities and Shareholders’ Equity	2,564,962	2,607,053
Combined Guarantor Subsidiaries [Member]
Current Assets
Cash and cash equivalents	348	355	212	313
Trade receivables, net	24,439	24,560
Installment receivables, net	305	292
Inventories, net	27,540	25,848
Deferred income taxes	0	0
Due from Affiliate, Current	412	976
Other current assets	475	397
Total Current Assets	53,519	52,428
Investment in subsidiaries	499,032	491,541
Intercompany advances, net	1,712,164	1,685,366
Other Assets	868	656
Other Intangibles	440	450
Property and Equipment, net	12,062	13,051
Goodwill	16,660	16,660
Total Assets	2,294,745	2,260,152
Current Liabilities
Accounts payable	9,761	6,362
Accrued expenses	22,424	20,900
Accrued income taxes	0	0
Due to Affiliate, Current	1,666	1,738
Short-term debt and current maturities of long-term obligations	8	8
Total Current Liabilities	33,859	29,008
Long-Term Debt	4	6
Other Long-Term Obligations	0	0
Inercompany advances, net	1,070,826	1,051,170
Total Shareholders’ Equity	1,190,056	1,179,968
Total Liabilities and Shareholders’ Equity	2,294,745	2,260,152
Combined Non-Guarantor Subsidiaries [Member]
Current Assets
Cash and cash equivalents	15,469	31,236	18,315	28,071
Trade receivables, net	84,259	85,198
Installment receivables, net	783	762
Inventories, net	109,648	107,139
Deferred income taxes	1,982	2,048
Due from Affiliate, Current	82,028	84,816
Other current assets	34,333	33,123
Total Current Assets	328,502	344,322
Investment in subsidiaries	0	0
Intercompany advances, net	183,862	184,651
Other Assets	760	1,442
Other Intangibles	33,448	37,334
Property and Equipment, net	40,225	42,818
Goodwill	369,967	409,051
Total Assets	956,764	1,019,618
Current Liabilities
Accounts payable	56,807	64,749
Accrued expenses	78,006	88,188
Accrued income taxes	9,789	11,002
Due to Affiliate, Current	15,531	12,920
Short-term debt and current maturities of long-term obligations	835	959
Total Current Liabilities	160,968	177,818
Long-Term Debt	3,420	4,020
Other Long-Term Obligations	54,832	60,254
Inercompany advances, net	56,880	54,088
Total Shareholders’ Equity	680,664	723,438
Total Liabilities and Shareholders’ Equity	956,764	1,019,618
Eliminations [Member]
Current Assets
Cash and cash equivalents	0	0	0	0
Trade receivables, net	0	0
Installment receivables, net	0	0
Inventories, net	(2,113)	(2,383)
Deferred income taxes	0	0
Due from Affiliate, Current	(93,256)	(95,799)
Other current assets	(3,090)	(4,635)
Total Current Assets	(98,459)	(102,817)
Investment in subsidiaries	(1,868,606)	(1,901,023)
Intercompany advances, net	(2,963,904)	(2,919,252)
Other Assets	0	0
Other Intangibles	0	0
Property and Equipment, net	0	0
Goodwill	0	0
Total Assets	(4,930,969)	(4,923,092)
Current Liabilities
Accounts payable	0	0
Accrued expenses	(3,090)	(4,635)
Accrued income taxes	0	0
Due to Affiliate, Current	(93,256)	(95,799)
Short-term debt and current maturities of long-term obligations	0	0
Total Current Liabilities	(96,346)	(100,434)
Long-Term Debt	0	0
Other Long-Term Obligations	0	0
Inercompany advances, net	(2,963,903)	(2,919,252)
Total Shareholders’ Equity	(1,870,720)	(1,903,406)
Total Liabilities and Shareholders’ Equity	$ (4,930,969)	$ (4,923,092)