Income Taxes - Impact of New Accounting Pronouncements (Details) - New Accounting Pronouncement, Early Adoption, Effect [Member] - Accounting Standards Update 2016-09 [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Decrease in Other capital	$ 11,322	$ 41,025
Decrease in Income taxes	11,322	41,025
Increase in net income	$ 11,322	$ 41,025
Increase in Average shares and equivalents outstanding - diluted (in shares)	667,822	602,877
Increase in Basic net income per common share (in dollars per share)	$ 0.12	$ 0.45
Increase in Diluted net income per common share (in dollars per share)	$ 0.09	$ 0.37