Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Accounting Policies [Abstract]

Average Estimated Useful Lives of Property Plant and Equipment [Table Text Block]

Asset category	Depreciable  Life (years)
Buildings	30 – 50
Leasehold improvements	20 – 30
Furniture and equipment	7 – 20
Automobiles	5 – 7
Computer hardware and software	3 – 5

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

The following table summarizes the basis used to measure the fair values of the Company’s financial instruments (amounts in thousands):

			Fair Value Measurements at Reporting Date,  Using:
Description	December 31, 2015		Quoted  Prices in Active Markets for Identical  Items (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and cash equivalents	$	346,266	$	346,266	$	—	$	—
Available-for-sale securities	5,941		4,843		—		1,098
Total assets	$	352,207	$	351,109	$	—	$	1,098
Purchase consideration payable	$	4,967	$	—	$	—	$	4,967
Total liabilities	$	4,967	$	—	$	—	$	4,967

Description	December 31, 2014		Quoted  Prices in Active Markets for Identical  Items (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and cash equivalents (as Restated)	$	70,679	$	70,679	$	—	$	—
Available-for-sale securities (as Restated)	8,391		—		—		8,391
Total assets (as Restated)	$	79,070	$	70,679	$	—	$	8,391
Purchase consideration payable (as Restated)	$	11,101	$	—	$	—	$	11,101
Total liabilities (as Restated)	$	11,101	$	—	$	—	$	11,101

Assumptions Used in Estimating Fair Value of Warrants [Table Text Block]

The assumptions used in estimating the fair value of the warrants at June 28, 2010 were as follows:

Expected volatility		79.7	%
Expected life (in years)	3.8	—		4.1
Risk-free interest rate		1.8	%
Dividend yield		—

Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

The following table provides summarized information about the Kapoor Warrants as of December 31, 2013:

Granted To:	Grant Date	Warrants  Granted	Exercise Price		Book Value  ($000s)
EJ Funds	Apr 13, 2009	1,939,639	$	1.11	$	4,829
Kapoor Trust	Apr 13, 2009	1,501,933	$	1.11	3,740
EJ Funds	Aug 17, 2009	1,650,806	$	1.16	4,127
Kapoor Trust	Aug 17, 2009	2,099,935	$	1.16	5,250
		7,192,313			$	17,946