Restatement of Previously Filed Financial Information - Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended												6 Months Ended			9 Months Ended			12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
OPERATING ACTIVITIES:
Consolidated net income (loss)	$ 32,785	$ 47,967	$ 32,508	$ 37,538	$ 17,979	$ (12,333)	$ (1,256)	$ 9,494	$ 16,678	$ 12,205	$ 12,637	$ 10,842	$ 70,046	$ 8,238	$ 23,479	$ 118,013	$ (4,095)	$ 35,684	$ 150,798	$ 13,884	$ 52,362
Loss from discontinued operations, net of tax							504							504			504			504
Adjustments to reconcile consolidated net income to net cash provided by operating activities:
Depreciation and amortization				21,109				6,675				3,289	44,742	18,565	6,651	63,835	37,270	9,925	86,924	57,831	14,476
Amortization of Financing Costs and Discounts				997				226				204	2,490	6,599	411	3,576	8,870	622	4,350	9,984	842
Amortization of favorable (unfavorable) contracts				18				18				(159)	35	35	(318)	53	53	(475)	71	71	(1,905)
Other Depreciation and Amortization				4,682									4,682	3,559		4,682	9,844		4,681	20,798
Share-based Compensation				2,974				1,282				1,703	6,062	3,275	4,244	9,270	5,065	5,674	12,997	7,752	7,050
Non-cash interest expense				1,186				1,249				1,226	1,889	2,655	2,263	2,342	3,955	3,426	2,778	4,871	4,634
Non-cash gain on bargain purchase				(849)									(849)			(849)			(849)		(3,707)
Gain from product divestiture														(9,329)			(9,329)			(9,329)
Deferred income taxes, net				(9,186)				(1,722)				798	(18,288)	(20,103)	1,201	(27,579)	(40,270)	1,829	(46,130)	(17,511)	2,091
Excess tax benefit from stock compensation				(29,944)				(33)				(238)	(47,997)	(722)	(745)	(47,997)	(32,047)	(1,192)	(47,997)	(29,517)	(2,928)
Other Noncash Expense															(1,299)			(1,299)			(1,299)
Equity in earnings of unconsolidated joint venture									(80)			(76)			(76)			(76)			(80)
Loss on extinguishment of debt				98									1,189			1,211			1,243	990
Gain on sale of available for sale security				146									230			238			237	(7)
Changes in operating assets and liabilities, net of business acquisitions:
Trade accounts receivable, net				384				(450)				(7,958)	60,449	(13,716)	(6,908)	52,056	(9,821)	(10,858)	40,287	(72,796)	(14,277)
Inventories, net				(14,559)				(5,987)				(1,441)	(21,356)	(10,227)	(4,428)	(41,177)	(14,037)	(4,575)	(50,729)	(19,385)	(3,797)
Prepaid expenses and other current assets				2,896				1,026				1,002	21,452	55,636	538	15,442	41,078	867	17,574	30,372	(648)
Trade accounts payable				7,916				6,100				(1,861)	(3,623)	11,524	(151)	9,357	1,888	1,444	(4,819)	13,963	1,975
Accrued expenses and other liabilities				19,860				5,498				(409)	59,896	(35,240)	(3,464)	86,999	14,429	1,414	93,229	27,967	2,537
NET CASH PROVIDED BY OPERATING ACTIVITIES				45,266				23,376				6,922	181,049	21,253	21,398	252,099	13,357	42,410	297,648	40,442	57,326
INVESTING ACTIVITIES:
Payments for acquisitions and equity investments, net of cash acquired				(24,637)				(7,500)				(269)	(27,136)	(579,315)	(513)	(26,908)	(929,772)	(513)	(24,408)	(987,428)	(55,482)
Proceeds from Sale of Productive Assets				2,358									2,372	58,721		2,459	58,750		2,459	59,361
Payments for other intangible assets													(800)	(6,300)		(3,135)	(8,498)		(3,835)	(8,908)
Purchases of property, plant and equipment				(7,088)				(5,198)				(2,689)	(15,600)	(11,912)	(5,159)	(21,628)	(17,778)	(7,936)	(27,934)	(29,899)	(11,642)
Proceeds from Equity Method Investment, Dividends or Distributions																					250
NET CASH USED IN INVESTING ACTIVITIES				(29,367)				(12,698)				(2,958)	(41,164)	(538,806)	(5,672)	(49,212)	(897,298)	(8,449)	(53,718)	(966,874)	(66,874)
FINANCING ACTIVITIES:
Proceeds from Issuance of Debt														600,000			1,045,044			1,045,000
Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options				10,958				1,022				868	11,916	2,071	1,265	11,917	6,867	2,439	11,916	8,842	3,222
Proceeds from (Payments for) Other Financing Activities				(1,500)									(6,492)			(6,492)			(8,991)	(15,000)
Debt financing costs								(408)					(1,714)	(19,775)		(4,457)	(28,365)	(2,557)	(8,564)	(28,365)	(3,032)
Proceeds from warrant exercises														8,171			8,171			8,171
Excess Tax Benefit from Share-based Compensation, Financing Activities				29,944				33				238	47,997	722	745	47,997	32,047	1,192	47,997	29,517	2,928
Debt repayment				(2,613)									(5,225)			(7,838)	(82,436)		(10,450)	(85,049)
NET CASH PROVIDED BY FINANCING ACTIVITIES				36,789				647				1,106	46,482	591,189	2,010	41,127	981,328	1,074	31,908	963,116	3,118
Effect of Exchange Rate on Cash and Cash Equivalents				165				103				12	44	102	(105)	(228)	(99)	(218)	(251)	(183)	(173)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS				52,853				11,428				5,082	186,411	73,738	17,631	243,786	97,288	34,817	275,587	36,501	(6,603)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	314,465	257,090	123,532	70,679	131,466	107,916	45,606	34,178	75,598	58,412	45,863	40,781	70,679	34,178	40,781	70,679	34,178	40,781	70,679	34,178	40,781
CASH AND CASH EQUIVALENTS AT END OF YEAR	$ 346,266	$ 314,465	$ 257,090	123,532	70,679	131,466	107,916	45,606	34,178	$ 75,598	$ 58,412	$ 45,863	257,090	107,916	$ 58,412	314,465	131,466	$ 75,598	346,266	70,679	34,178
As Previously Reported
OPERATING ACTIVITIES:
Consolidated net income (loss)					34,232	(11,650)	2,935	9,828						12,763			1,113			35,345
Loss from discontinued operations, net of tax							503							503			503			503
Adjustments to reconcile consolidated net income to net cash provided by operating activities:
Depreciation and amortization								6,675						18,865			37,773			58,538
Amortization of Financing Costs and Discounts								2,129						8,589			11,099			12,129
Amortization of favorable (unfavorable) contracts								18						35			53			72
Other Depreciation and Amortization														3,559			9,844			20,798
Share-based Compensation								1,282						3,331			4,994			7,542
Non-cash interest expense								1,249						2,655			3,954			4,871
Gain from product divestiture														(8,968)			(9,807)			(9,807)
Deferred income taxes, net								(1,689)						(9,959)			9,002			25,293
Excess tax benefit from stock compensation								(33)						(831)			(32,268)			(38,710)
Loss on extinguishment of debt																				990
Gain on sale of available for sale security																				(7)
Changes in operating assets and liabilities, net of business acquisitions:
Trade accounts receivable, net								(450)						(19,138)			(15,340)			(95,470)
Inventories, net								(5,987)						(4,213)			(14,177)			(15,262)
Prepaid expenses and other current assets								1,026						1,151			(14,491)			(13,180)
Trade accounts payable								6,100						4,965			2,340			11,024
Accrued expenses and other liabilities								3,228						8,695			19,677			26,249
NET CASH PROVIDED BY OPERATING ACTIVITIES								23,376						22,002			14,269			30,918
INVESTING ACTIVITIES:
Payments for acquisitions and equity investments, net of cash acquired								(7,500)						(579,315)			(929,771)			(987,802)
Proceeds from Sale of Productive Assets														57,750			58,750			59,361
Payments for other intangible assets														(6,300)			(8,499)			(8,532)
Purchases of property, plant and equipment								(5,198)						(11,929)			(19,393)			(29,568)
NET CASH USED IN INVESTING ACTIVITIES								(12,698)						(539,794)			(898,913)			(966,541)
FINANCING ACTIVITIES:
Proceeds from Issuance of Debt														600,000			1,045,000			1,045,000
Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options								1,022						2,071			6,867			8,842
Proceeds from (Payments for) Other Financing Activities																				(15,000)
Debt financing costs								(408)						(19,654)			(28,462)			(28,366)
Proceeds from warrant exercises														8,171			8,171			8,171
Excess Tax Benefit from Share-based Compensation, Financing Activities								33						831			32,268			38,710
Debt repayment																	(81,813)			(85,049)
NET CASH PROVIDED BY FINANCING ACTIVITIES								647						591,419			982,032			972,308
Effect of Exchange Rate on Cash and Cash Equivalents								103						102			(99)			(183)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS														73,729			97,288			36,502	11,428
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR				70,680	131,466	107,907	45,606	34,178					70,680	34,178		70,680	34,178		70,680	34,178
CASH AND CASH EQUIVALENTS AT END OF YEAR					70,680	131,466	107,907	45,606	$ 34,178					107,907			131,466			70,680	$ 34,178
Restatement Adjustment
OPERATING ACTIVITIES:
Consolidated net income (loss)					(16,253)	(683)	(4,191)	(334)						(4,525)			(5,208)			(21,461)
Loss from discontinued operations, net of tax							1							1			1			1
Adjustments to reconcile consolidated net income to net cash provided by operating activities:
Depreciation and amortization														(300)			(503)			(707)
Amortization of Financing Costs and Discounts								(1,903)						(1,990)			(2,229)			(2,145)
Amortization of favorable (unfavorable) contracts																				(1)
Share-based Compensation														(56)			71			210
Non-cash interest expense																	1
Gain from product divestiture														(361)			478			478
Deferred income taxes, net								(33)						(10,144)			(49,272)			(42,804)
Excess tax benefit from stock compensation														109			221			9,193
Changes in operating assets and liabilities, net of business acquisitions:
Trade accounts receivable, net														5,422			5,519			22,674
Inventories, net														(6,014)			140			(4,123)
Prepaid expenses and other current assets														54,485			55,569			43,552
Trade accounts payable														6,559			(452)			2,939
Accrued expenses and other liabilities								$ 2,270						(43,935)			(5,248)			1,718
NET CASH PROVIDED BY OPERATING ACTIVITIES														(749)			(912)			9,254
INVESTING ACTIVITIES:
Payments for acquisitions and equity investments, net of cash acquired																	(1)			374
Proceeds from Sale of Productive Assets														971
Payments for other intangible assets																	1			(376)
Purchases of property, plant and equipment														17			1,615			(331)
NET CASH USED IN INVESTING ACTIVITIES														988			1,615			(333)
FINANCING ACTIVITIES:
Proceeds from Issuance of Debt																	44
Debt financing costs														(121)			97			1
Excess Tax Benefit from Share-based Compensation, Financing Activities														(109)			(221)			(9,193)
Debt repayment																	(623)
NET CASH PROVIDED BY FINANCING ACTIVITIES														(230)			$ (704)			(9,192)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS														9						(1)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR				$ (1)		$ 9							$ (1)			$ (1)			$ (1)
CASH AND CASH EQUIVALENTS AT END OF YEAR					$ (1)		$ 9							$ 9						$ (1)