Share-Based Compensation Plan - Schedule of options outstanding and exercisable (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices (in dollars per share)	$ 14.00	$ 14.00	$ 14.00	$ 15.30
Options Outstanding (in shares)	23,362	30,012	30,012	58,513
Options Exercisable (in shares)	23,362	30,012	30,012
14.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices (in dollars per share)	$ 14.00
Options Outstanding (in shares)	18,362
Weighted-Average Remaining Contractual Life (years)	2 years 2 months 19 days
Options Exercisable (in shares)	18,362
14.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices (in dollars per share)	$ 14.00
Options Outstanding (in shares)	5,000
Weighted-Average Remaining Contractual Life (years)	2 years 10 months 6 days
Options Exercisable (in shares)	5,000
14.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices (in dollars per share)	$ 14.00
Options Outstanding (in shares)	23,362.000
Weighted-Average Remaining Contractual Life (years)	2 years 4 months 9 days
Options Exercisable (in shares)	23,362.000