Supplemental Guarantor Information Consolidating Condensed Balance Sheets (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
Current Assets
Cash and cash equivalents	$ 21,260	$ 29,785	$ 25,081	$ 38,791
Trade receivables, net	186,919	188,622
Installment receivables, net	1,590	1,562
Inventories, net	165,343	155,637
Deferred income taxes	2,714	2,761
Due from Affiliate, Current	0	0
Other current assets	39,036	41,172
Total Current Assets	416,862	419,539
Investment in subsidiaries	0	0
Intercompany advances, net	0	0
Other Assets	46,030	45,936
Other Intangibles	61,064	62,584
Property and Equipment, net	103,745	106,149
Goodwill	468,314	462,226
Total Assets	1,096,015	1,096,434
Current Liabilities
Accounts payable	124,442	116,704
Accrued expenses	131,345	133,100
Accrued income taxes	12,271	12,259
Due to Affiliate, Current	0	0
Short-term debt and current maturities of long-term obligations	1,763	14,102
Total Current Liabilities	269,821	276,165
Long-Term Debt	47,194	31,184
Other Long-Term Obligations	119,089	118,276
Inercompany advances, net	0	0
Total Shareholders' Equity	659,911	670,809
Total Liabilities and Shareholders' Equity	1,096,015	1,096,434
The Company (Parent) [Member]
Current Assets
Cash and cash equivalents	2,733	1,401	1,984	5,774
Trade receivables, net	62,104	72,272
Installment receivables, net	0	0
Inventories, net	21,169	30,806
Deferred income taxes	0	0
Due from Affiliate, Current	8,750	4,179
Other current assets	8,643	9,970
Total Current Assets	103,399	118,628
Investment in subsidiaries	1,492,163	1,475,156
Intercompany advances, net	974,444	959,071
Other Assets	42,655	42,831
Other Intangibles	543	466
Property and Equipment, net	33,904	35,169
Goodwill	0	0
Total Assets	2,647,108	2,631,321
Current Liabilities
Accounts payable	51,340	42,521
Accrued expenses	29,871	30,314
Accrued income taxes	4,220	5,375
Due to Affiliate, Current	45,945	42,314
Short-term debt and current maturities of long-term obligations	794	13,118
Total Current Liabilities	132,170	133,642
Long-Term Debt	41,811	25,642
Other Long-Term Obligations	53,359	53,470
Inercompany advances, net	1,759,857	1,747,758
Total Shareholders' Equity	659,911	670,809
Total Liabilities and Shareholders' Equity	2,647,108	2,631,321
Combined Guarantor Subsidiaries [Member]
Current Assets
Cash and cash equivalents	212	313	199	1,018
Trade receivables, net	29,569	28,317
Installment receivables, net	557	452
Inventories, net	27,076	27,472
Deferred income taxes	0	0
Due from Affiliate, Current	521	380
Other current assets	507	568
Total Current Assets	58,442	57,502
Investment in subsidiaries	458,521	450,021
Intercompany advances, net	1,639,111	1,620,683
Other Assets	1,320	1,061
Other Intangibles	16,272	17,109
Property and Equipment, net	16,914	17,774
Goodwill	16,660	16,660
Total Assets	2,207,240	2,180,810
Current Liabilities
Accounts payable	7,834	7,237
Accrued expenses	16,351	17,228
Accrued income taxes	0	0
Due to Affiliate, Current	1,956	2,124
Short-term debt and current maturities of long-term obligations	8	8
Total Current Liabilities	26,149	26,597
Long-Term Debt	41	61
Other Long-Term Obligations	0	0
Inercompany advances, net	974,811	959,172
Total Shareholders' Equity	1,206,239	1,194,980
Total Liabilities and Shareholders' Equity	2,207,240	2,180,810
Combined Non-Guarantor Subsidiaries [Member]
Current Assets
Cash and cash equivalents	18,315	28,071	22,898	31,999
Trade receivables, net	95,246	88,033
Installment receivables, net	1,033	1,110
Inventories, net	119,646	100,444
Deferred income taxes	2,714	2,761
Due from Affiliate, Current	49,043	44,292
Other current assets	32,903	35,461
Total Current Assets	318,900	300,172
Investment in subsidiaries	0	0
Intercompany advances, net	181,460	179,451
Other Assets	2,055	2,044
Other Intangibles	44,249	45,009
Property and Equipment, net	52,927	53,206
Goodwill	451,654	445,566
Total Assets	1,051,245	1,025,448
Current Liabilities
Accounts payable	65,268	66,946
Accrued expenses	88,140	90,385
Accrued income taxes	8,051	6,884
Due to Affiliate, Current	10,412	4,413
Short-term debt and current maturities of long-term obligations	961	976
Total Current Liabilities	172,832	169,604
Long-Term Debt	5,342	5,481
Other Long-Term Obligations	65,730	64,806
Inercompany advances, net	60,347	52,275
Total Shareholders' Equity	746,994	733,282
Total Liabilities and Shareholders' Equity	1,051,245	1,025,448
Eliminations [Member]
Current Assets
Cash and cash equivalents	0	0	0	0
Trade receivables, net	0	0
Installment receivables, net	0	0
Inventories, net	(2,548)	(3,085)
Deferred income taxes	0	0
Due from Affiliate, Current	(58,314)	(48,851)
Other current assets	(3,017)	(4,827)
Total Current Assets	(63,879)	(56,763)
Investment in subsidiaries	(1,950,684)	(1,925,177)
Intercompany advances, net	(2,795,015)	(2,759,205)
Other Assets	0	0
Other Intangibles	0	0
Property and Equipment, net	0	0
Goodwill	0	0
Total Assets	(4,809,578)	(4,741,145)
Current Liabilities
Accounts payable	0	0
Accrued expenses	(3,017)	(4,827)
Accrued income taxes	0	0
Due to Affiliate, Current	(58,313)	(48,851)
Short-term debt and current maturities of long-term obligations	0	0
Total Current Liabilities	(61,330)	(53,678)
Long-Term Debt	0	0
Other Long-Term Obligations	0	0
Inercompany advances, net	(2,795,015)	(2,759,205)
Total Shareholders' Equity	(1,953,233)	(1,928,262)
Total Liabilities and Shareholders' Equity	$ (4,809,578)	$ (4,741,145)