Schedule II - Valuation and Qualifying Accounts (Details Textual) - USD ($)		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Estimated Liability for Appeals and Estimated Allowance for Appeals [Member] | Portion Associated with Medicare RAC Contract [Member]
Valuation Allowances and Reserves, Appeals Found in Providers Favor		$ 6,200,000	$ 24,300,000	$ 6,300,000
Estimated Liability for Appeals and Estimated Allowance for Appeals [Member]
Valuation Allowances and Reserves, Appeals Found in Providers Favor	[1]	17,573,000	30,990,000	19,711,000
Estimated Liability for Appeals		6,614,000	4,824,000	$ 13,939,000
Estimated Liability for Appeals		$ 33,078,000	$ 36,799,000

[1] For the years ended December 31, 2015, 2014, and 2013 included within the estimated allowance for appeals found in favor of providers, $6.2 million, $24.3 million and $6.3 million, respectively, was activity associated with HDI's Medicare RAC contract.