CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 11,699	$ 1,565	$ 1,630	$ 45,836	$ 1,613	$ 1,246	$ 2,858	$ 6,273	$ 13,130	$ 13,130	$ 43,323
Accounts receivable, net of allowance for doubtful accounts of $9,944 and $6,472 in 2014 and 2013, respectively	174,248	165,787	159,471	146,060	154,739	149,952	150,276	139,756
Inventories	70,517	86,155	90,506	85,783	82,257	83,293	81,214	79,575
Other current assets	21,356	46,604	33,097	27,466	21,606	22,861	28,937	29,313
Deferred income taxes	109,252	70,333	70,789	71,569	75,616	64,209	64,153	61,055
Assets held for sale	8,215
Total current assets	395,287	370,444	355,493	376,714	335,831	321,561	327,438	315,972
Non-current assets:
Property, plant and equipment, net	112,350	114,223	119,677	120,225	116,289	113,144	109,475	106,249
Goodwill	710,053	716,571	715,010	702,769	682,628	679,721	678,748	675,451	675,468
Other intangible assets, net	58,515	60,553	62,600	60,352	56,240	56,906	58,520	59,311
Debt issuance costs, net	6,648	7,110	7,572	8,034	8,496	8,958	9,420	13,169
Other assets	19,452	20,055	18,384	17,826	15,504	16,305	15,872	16,064
Total assets	1,302,305	1,288,956	1,278,736	1,285,920	1,214,988	1,196,595	1,199,473	1,186,216	1,201,288
Current liabilities:
Current portion of long-term debt	26,852	25,677	24,505	21,906	17,728	15,437	15,652	13,229
Accounts payable	48,554	49,658	45,642	43,964	44,519	44,921	47,798	36,189
Accrued expenses and other current liabilities	91,778	68,118	47,436	44,508	44,433	41,043	41,605	40,096
Accrued interest payable	2,366	5,950	2,274	5,646	2,019	5,934	2,351	6,645
Accrued compensation related costs	41,288	35,656	24,664	21,417	38,606	35,304	25,914	22,084
Total current liabilities	210,838	185,059	144,521	137,441	147,305	142,639	133,320	118,243
Long-term liabilities:
Long-term debt, less current portion	502,132	511,698	535,093	559,096	469,818	474,068	505,751	522,189
Deferred income taxes	59,924	62,786	62,338	61,640	65,329	65,906	65,935	66,489
Other liabilities	45,875	44,150	44,734	42,120	41,223	39,256	37,744	37,257
Total liabilities	818,769	803,693	786,686	800,297	723,675	721,869	742,750	744,178
Commitments and contingent liabilities (Note Q)
Shareholders' Equity:
Common stock, $.01 par value; 60,000,000 shares authorized, 35,540,630 shares issued and 35,399,476 shares outstanding and 35,158,196 shares issued and 35,017,042 shares outstanding in 2014 and 2013. respectively	355	355	355	355	351	352	352	350
Additional paid-in capital	307,166	304,596	302,581	299,384	295,113	291,455	288,971	285,486
Accumulated other comprehensive loss	(1,888)	(1,020)	(1,020)	(1,020)	(1,020)	(1,919)	(1,919)	(1,919)
Retained earnings	178,559	181,988	190,790	187,560	197,525	185,494	169,975	158,777	157,014		108,990
Shareholders' equity, excluding treasury stock	484,192	485,919	492,706	486,279	491,969	475,382	457,379	442,694
Treasury stock, at cost 141,154 shares at 2014 and 2013, respectively	(656)	(656)	(656)	(656)	(656)	(656)	(656)	(656)
Total shareholders' equity	483,536	485,263	492,050	485,623	491,313	474,726	456,723	442,038	$ 437,055		$ 378,031
Total liabilities and shareholders' equity	$ 1,302,305	$ 1,288,956	$ 1,278,736	$ 1,285,920	$ 1,214,988	$ 1,196,595	$ 1,199,473	$ 1,186,216