Restatement of Previously Filed Financial Information - Balance Sheets (Details) - USD ($) $ in Thousands	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	Dec. 31, 2012
Assets, Current [Abstract]
Cash and cash equivalents	$ 346,266	$ 314,465	$ 257,090	$ 123,532	$ 70,679	$ 131,466	$ 107,916	$ 45,606	$ 34,178	$ 75,598	$ 58,412	$ 45,863	$ 40,781
Trade accounts receivable, net	150,621	138,920	130,812	190,710	187,545	127,972	128,774	65,500	64,998
Inventory, Net	185,316	175,851	156,315	149,403	135,197	132,116	113,666	62,013	55,982
Deferred taxes, current	43,024	41,871	40,717	39,564	38,411	63,976	39,893	8,038	7,945
Available-for-sale Securities, Current	5,941	5,637	5,632	5,558	7,268	10,804
Prepaid expenses and other current assets	19,988	22,102	16,447	35,118	37,061	27,332	12,277	4,559	5,753
TOTAL CURRENT ASSETS	751,156	698,846	607,013	543,885	476,161	493,666	402,526	185,716	168,856
Property, Plant and Equipment, Net	179,614	177,433	179,239	175,991	144,196	139,374	135,464	87,675	82,108
Other Long Term Assets [Abstract]
Goodwill	284,710	284,708	285,356	285,674	285,283	285,881	186,365	30,437	29,831
Product licensing rights, net	653,628	699,443	674,687	689,490	704,791	671,127	429,788	122,933	115,900
Other intangibles, net	211,361	212,360	251,283	254,590	255,612	251,156	34,803	14,283	14,605
Deferred financing costs, net	27,591	24,263	22,612	22,687	23,704	25,172	18,666	5,473	5,676
Deferred taxes, non-current	3,757	3,337	2,982	2,643	2,084	1,746	2,451	3,330	1,643
Long-term investments	129	129	130	129	211	211	10,971	10,012	10,006
Other non-current assets	764	748	1,282	1,248	1,863	2,377	579	3,556	3,180
TOTAL OTHER LONG-TERM ASSETS	1,181,940	1,224,988	1,238,332	1,256,462	1,273,548	1,237,670	683,623	190,024	180,841
TOTAL ASSETS	2,112,710	2,101,267	2,024,584	1,976,338	1,893,905	1,870,710	1,221,613	463,415	431,805
CURRENT LIABILITIES
Trade accounts payable	46,019	57,765	45,536	57,971	47,317	38,205	43,454	30,632	22,999
Purchase consideration payable, current	4,967	4,936	4,904	12,367	10,970	24,216	24,003	18,898	14,728
Income taxes payable	23,670	15,489	3,525					8,739	1,459
Accrued royalties	19,378	14,452	13,716	13,948	13,204	14,533	7,072	6,480	6,004
Accrued compensation	15,866	15,958	11,286	8,375	13,467	12,977	11,058	4,453	7,692
Current maturities of long-term debt	52,915	53,450	53,971	10,450	10,450	10,494	4,500
Accrued administrative fees	37,094	46,929	45,229	36,312	40,870	8,898	4,475	2,110	2,544
Accrued expenses and other liabilities	31,603	28,767	20,813	14,428	14,576	31,957	18,829	6,929	5,819
TOTAL CURRENT LIABILITIES	231,512	237,746	198,980	153,851	150,854	141,280	113,391	78,241	61,245
Liabilities, Current.
Long-term debt	1,021,488	1,024,100	1,026,713	1,110,458	1,114,481	1,146,585	706,420	109,825	108,750
Deferred Tax Liabilities, Gross, Noncurrent	231,382	248,279	256,035	263,466	269,428	270,775	115,428
Lease incentive obligations and other long-term liabilities	6,763	6,640	6,910	6,388	2,836	2,679	2,165	1,634	1,630
TOTAL LONG-TERM LIABILITIES	1,259,633	1,279,019	1,289,658	1,380,312	1,386,745	1,420,039	824,013	111,459	110,380
TOTAL LIABILITIES	1,491,145	1,516,765	1,488,638	1,534,163	1,537,599	1,561,319	937,404	189,700	171,625
SHAREHOLDERS' EQUITY
Common stock, no par value - 150,000,000 shares authorized; 119,427,471 and 111,734,901 shares issued and outstanding at December 31, 2015 and 2014	458,659	453,940	449,742	388,475	342,252	309,331	271,420	241,571	239,235
Warrants and Rights Outstanding								17,946	17,946
Retained Earnings (Accumulated Deficit)	180,048	147,263	99,296	66,788	29,250	11,271	23,604	24,860	15,366
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	(17,142)	(16,701)	(13,092)	(13,088)	(15,195)	(11,211)	(10,815)	(10,662)	(12,367)
TOTAL SHAREHOLDERS' EQUITY	621,565	584,502	535,946	442,175	356,307	309,391	284,209	273,715	260,180				$ 201,081
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 2,112,710	$ 2,101,267	$ 2,024,584	$ 1,976,338	1,893,905	1,870,710	1,221,613	463,415	431,805
As Previously Reported
Assets, Current [Abstract]
Cash and cash equivalents					70,680	131,466	107,907	45,606	$ 34,178
Trade accounts receivable, net					220,716	145,212	139,973	65,500
Inventory, Net					131,310	132,830	108,914	62,013
Deferred taxes, current					33,480	40,708	23,266	8,038
Available-for-sale Securities, Current					7,268	10,804
Prepaid expenses and other current assets					30,875	33,075	17,013	4,559
TOTAL CURRENT ASSETS					494,329	494,095	397,073	185,716
Property, Plant and Equipment, Net					143,788	139,372	135,695	87,675
Other Long Term Assets [Abstract]
Goodwill					278,774	285,080	190,448	30,437
Product licensing rights, net					704,218	670,757	429,621	122,933
Other intangibles, net					259,141	254,685	34,803	14,283
Deferred financing costs, net					21,560	22,942	16,463	3,570
Deferred taxes, non-current					3,020	1,746	2,451	3,330
Long-term investments					208	208	10,965	10,012
Other non-current assets					1,863	2,377	579	3,556
TOTAL OTHER LONG-TERM ASSETS					1,268,784	1,237,795	685,330	188,121
TOTAL ASSETS					1,906,901	1,871,262	1,218,098	461,512
CURRENT LIABILITIES
Trade accounts payable					44,116	36,714	37,794	30,632
Purchase consideration payable, current					7,481	20,728	20,514	18,898
Income taxes payable					1		571	6,559
Accrued royalties					13,041	14,533	7,071	6,480
Accrued compensation					13,467	12,625	11,058	4,453
Current maturities of long-term debt					10,450	10,494	4,500
Accrued administrative fees					27,774	3,105	2,110	2,110
Accrued expenses and other liabilities					17,835	35,616	20,055	6,929
TOTAL CURRENT LIABILITIES					134,165	133,815	103,673	76,061
Liabilities, Current.
Long-term debt					1,114,481	1,146,585	706,420	109,825
Deferred Tax Liabilities, Gross, Noncurrent					268,968	274,165	117,277
Lease incentive obligations and other long-term liabilities					2,536	1,946	1,830	1,577
TOTAL LONG-TERM LIABILITIES					1,385,985	1,422,696	825,527	111,402
TOTAL LIABILITIES					1,520,150	1,556,511	929,200	187,463
SHAREHOLDERS' EQUITY
Common stock, no par value - 150,000,000 shares authorized; 119,427,471 and 111,734,901 shares issued and outstanding at December 31, 2015 and 2014					351,235	309,482	271,584	241,571
Warrants and Rights Outstanding								17,946
Retained Earnings (Accumulated Deficit)					50,711	16,480	28,129	25,194
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax					(15,195)	(11,211)	(10,815)	(10,662)
TOTAL SHAREHOLDERS' EQUITY					386,751	314,751	288,898	274,049
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY					1,906,901	1,871,262	1,218,098	461,512
Restatement Adjustment
Assets, Current [Abstract]
Cash and cash equivalents					(1)		9
Trade accounts receivable, net					(33,171)	(17,240)	(11,199)
Inventory, Net					3,887	(714)	4,752
Deferred taxes, current					4,931	23,268	16,627
Prepaid expenses and other current assets					6,186	(5,743)	(4,736)
TOTAL CURRENT ASSETS					(18,168)	(429)	5,453
Property, Plant and Equipment, Net					408	2	(231)
Other Long Term Assets [Abstract]
Goodwill					6,509	801	(4,083)
Product licensing rights, net					573	370	167
Other intangibles, net					(3,529)	(3,529)
Deferred financing costs, net					2,144	2,230	2,203	1,903
Deferred taxes, non-current					(936)
Long-term investments					3	3	6
TOTAL OTHER LONG-TERM ASSETS					4,764	(125)	(1,707)	1,903
TOTAL ASSETS					(12,996)	(552)	3,515	1,903
CURRENT LIABILITIES
Trade accounts payable					3,201	1,491	5,660
Purchase consideration payable, current					3,489	3,488	3,489
Income taxes payable					(1)		(571)	2,180
Accrued royalties					163		1
Accrued compensation						352
Accrued administrative fees					13,096	5,793	2,365
Accrued expenses and other liabilities					(3,259)	(3,659)	(1,226)
TOTAL CURRENT LIABILITIES					16,689	7,465	9,718	2,180
Liabilities, Current.
Deferred Tax Liabilities, Gross, Noncurrent					460	(3,390)	(1,849)
Lease incentive obligations and other long-term liabilities					300	733	335	57
TOTAL LONG-TERM LIABILITIES					759	(2,657)	(1,514)	57
TOTAL LIABILITIES					17,448	4,808	8,204	2,237
SHAREHOLDERS' EQUITY
Common stock, no par value - 150,000,000 shares authorized; 119,427,471 and 111,734,901 shares issued and outstanding at December 31, 2015 and 2014					(8,983)	(151)	(164)
Retained Earnings (Accumulated Deficit)					(21,461)	(5,209)	(4,525)	(334)
TOTAL SHAREHOLDERS' EQUITY					(30,444)	(5,360)	(4,689)	(334)
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY					$ (12,996)	$ (552)	$ 3,515	$ 1,903