Other Investments - Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Dec. 31, 2015
Schedule Of Held To Maturity Securities [Line Items]
Debt security, held-to-maturity	[1]	$ 15,000	$ 15,000
Available for sale securities equity securities		$ 6,017	6,603
Maturity date		Mar. 24, 2019
Debt security bears interest at the rate		The debt security pays interest quarterly at the rate of 4.0% above the three-month London Interbank Offered Rate (“LIBOR”).
Debt security, held-to-maturity, fair value	[1]	$ 14,477	$ 14,871
London Interbank Offered Rate (LIBOR)
Schedule Of Held To Maturity Securities [Line Items]
Debt security, variable rate basis added to LIBOR to determine interest rate		4.00%
Federal Home Loan Bank of Atlanta (FHLB)
Schedule Of Held To Maturity Securities [Line Items]
Available for sale securities equity securities		$ 17
Available for Sale Equity Security Investment in Counterparty
Schedule Of Held To Maturity Securities [Line Items]
Available for sale securities equity securities		$ 6,000

[1] Included in other investments on the consolidated balance sheets.