Loans - Outstanding Principal and Carrying Amount of Acquired Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Outstanding principal balance and the carrying amount of loan acquired [Abstract]
Outstanding principal balance	$ 98,341	$ 104,172
Carrying amount	91,078	96,487
Outstanding principal balance and the carrying amount of loan acquired, impaired [Abstract]
Outstanding principal balance	33,443	34,378
Carrying amount	$ 27,961	$ 28,669