Stock Incentive Plans - Summary of Outstanding Options (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Number of Options
Outstanding at beginning of year (in shares)	1,312,000	1,394,000
Outstanding at end of period (in shares)	911,000	1,312,000	1,394,000
The 2014 Plan [Member]
Number of Options
Granted (in shares)	0	0	0
Stock Options [Member] | The 2014 Plan [Member]
Number of Options
Outstanding at beginning of year (in shares)	904,158	997,352	1,101,014
Granted (in shares)	0	0	0
Cancelled (in shares)	(8,126)	(6,252)	(2,146)
Exercised (in shares)	(371,390)	(86,942)	(101,516)
Outstanding at end of period (in shares)	524,642	904,158	997,352
Weighted Average Grant Price Per Option
Outstanding at beginning of year (in dollars per share)	$ 7.70	$ 8.05	$ 8.35
Granted (in dollars per share)		0.00	0.00
Cancelled (in dollars per share)	12.63	12.63	12.63
Exercised (in dollars per share)	9.04	11.46	11.21
Outstanding at end of period (in dollars per share)	$ 6.67	$ 7.70	$ 8.05