Stock Compensation Plan - Summary of Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Options
Outstanding as of beginning of period (in shares)	62,000
Granted (in shares)	0
Exercised (in shares)	0
Forfeited (in shares)	0
Outstanding as of end of period (in shares)	62,000	62,000
Exercisable (in shares)	62,000
Weighted-Average Exercise Price
Outstanding as of beginning of period (in dollars per share)	$ 25.71
Granted (in dollars per share)	0.00
Exercised (in dollars per share)	0.00
Forfeited (in dollars per share)	0.00
Outstanding as of end of period (in dollars per share)	25.71	$ 25.71
Exercisable (in dollars per share)	$ 25.71
Aggregate Intrinsic Value
Outstanding as of beginning of period	$ 219
Exercised	0
Outstanding as of end of period	219	$ 219
Exercisable as of end of period	$ 219
Weighted-Average Remaining Term (in years)
Outstanding	3 months 18 days	7 months 6 days
Exercisable as of the end of the period	3 months 18 days