Stock Compensation - Director Deferred Compensation (Details) - Director - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Beginning balance, Director Deferred Stock (in shares)	142,913
New shares deferred (in shares)	14,319
Issued (in shares)	(13,587)	(7,531)	(7,178)
Ending balance, Director Deferred Stock (in shares)	143,645	142,913