Other Assets - Schedule of Investing Commitment (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)
Other Commitments [Line Items]
Original commitment amount	$ 37,566
Less: life to date contributions	(30,149)
Remaining commitment amount	$ 7,417
R4 - MVV
Other Commitments [Line Items]
Years over which tax credits are earned	17 years
Original commitment amount	$ 8,528
Less: life to date contributions	(8,248)
Remaining commitment amount	$ 280
R4 - Coronado
Other Commitments [Line Items]
Years over which tax credits are earned	17 years
Original commitment amount	$ 10,729
Less: life to date contributions	(10,089)
Remaining commitment amount	$ 640
R4 - PJ33
Other Commitments [Line Items]
Years over which tax credits are earned	17 years
Original commitment amount	$ 6,809
Less: life to date contributions	(432)
Remaining commitment amount	$ 6,377
WNC
Other Commitments [Line Items]
Years over which tax credits are earned	16 years
Original commitment amount	$ 2,500
Less: life to date contributions	(2,380)
Remaining commitment amount	$ 120
USA 57
Other Commitments [Line Items]
Years over which tax credits are earned	15 years
Original commitment amount	$ 3,000
Less: life to date contributions	(3,000)
Remaining commitment amount	$ 0
Centerline XXXIII
Other Commitments [Line Items]
Years over which tax credits are earned	18 years
Original commitment amount	$ 3,000
Less: life to date contributions	(3,000)
Remaining commitment amount	$ 0
Centerline XXII
Other Commitments [Line Items]
Years over which tax credits are earned	18 years
Original commitment amount	$ 3,000
Less: life to date contributions	(3,000)
Remaining commitment amount	$ 0