Summary of Significant Accounting Policies (Details 2) (USD $)	12 Months Ended		0 Months Ended	6 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Jun. 06, 2013 Access MuGard Rights	Dec. 31, 2013 Access MuGard Rights	Dec. 31, 2013 Access MuGard Rights	Dec. 31, 2013 Access MuGard Rights Significant Unobservable Inputs (Level 3)	Dec. 31, 2013 Access MuGard Rights Recurring basis Significant Unobservable Inputs (Level 3)	Dec. 31, 2013 Access MuGard Rights Minimum	Dec. 31, 2013 Access MuGard Rights Maximum
Rollforward of Level 3 assets
Balance at beginning of period		$ 17,527,000
Total gains (losses) (realized or unrealized):
Included in earnings		(1,471,000)
Included in other comprehensive income (loss)		2,373,000
Purchases, issuances, sales, and settlements:
Sales		(18,329,000)
Settlements		(100,000)
Reconciliation of contingent consideration obligations related to acquisition of MuGard rights
Balance at beginning of period				13,700,000
Acquisition-date fair value of contingent consideration			13,700,000
Payments made				(51,000)
Adjustments to fair value of contingent consideration	1,074,000			1,074,000
Other adjustments				(173,000)
Balance at end of period				14,550,000	14,550,000
Fair value of the contingent consideration			13,700,000
Estimated undiscounted royalty amounts payable								28,000,000	34,000,000
Period over which estimated undiscounted royalty amounts could be paid					10 years
Intangible assets						16,900,000
Discount rate (as a percent)						19.00%	15.00%
Contingent consideration classified as short-term liability	$ 941,000			$ 900,000	$ 900,000