Stock Incentive Plans - Share Grant Activity (Details) - The 2014 Plan [Member] - Non Vested Shares [Member] - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Nonvested Shares [Roll Forward]
Nonvested number, at beginning of year (in shares)	407,296	435,272	426,180
Granted (in shares)	172,520	190,258	181,530
Cancelled (in shares)	(3,537)	(6,736)	(10,764)
Vested and issued (in shares)	(190,254)	(211,498)	(161,674)
Nonvested number at end of year (in shares)	386,025	407,296	435,272