Organization and Basis of Presentation - Summary of Financial Securities (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities	$ 121,244	$ 117,240
Total Amortized Cost		106,955
Total Gross Unrealized Gain Loss		5,285
Total Fair Value		112,240
Available-for-sale Securities and Held-to-maturity Securities	118,013	111,955
Available-For-Sale Securities And Held-To-Maturity Securities, Accumulated Gross Unrealized Gain (Loss), Before Tax	3,231	5,285
Corporate Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	8,746	9,435
Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax	149	145
Available-for-sale Securities	8,895	9,580
US Treasury Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	3,769	3,769
Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax	6	3
Available-for-sale Securities	3,775	3,772
Common Stock [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost Basis	31,755	25,755
Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax	3,076	5,137
Available-for-sale Securities	34,831	30,892
Collateralized Mortgage Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment	73,743	67,996
Held-to-maturity Securities, Unrecognized Holding Gain	0	0
Held-to-maturity securities	$ 73,743	67,996
Other Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment		5,000
Held-to-maturity Securities, Unrecognized Holding Gain		0
Held-to-maturity securities		$ 5,000