Stock-Based Compensation - Changes in Nonvested Stock Options (Details)	12 Months Ended
	Dec. 31, 2015 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Options, Nonvested, Beginning balance (shares) | shares	323,565
Options, Nonvested, Granted (in shares) | shares	73,000
Options, Nonvested, Vested (shares) | shares	(144,877)
Options, Nonvested, Forfeited (shares) | shares	(20,088)
Options, Nonvested, Ending balance (shares) | shares	231,600
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Options, Nonvested, Weighted Average Grant Date Fair Value, Beginning balance, (in dollars per share) | $ / shares	$ 9.42
Options, Nonvested, Weighted Average Grant Date Fair Value, Granted, (in dollars per share) | $ / shares	10.63
Options, Nonvested, Weighted Average Grant Date Fair Value, Vested, (in dollars per share) | $ / shares	8.78
Options, Nonvested, Weighted Average Grant Date Fair Value, Forfeited, (in dollars per share) | $ / shares	10.40
Options, Nonvested, Weighted Average Grant Date Fair Value, Ending balance, (in dollars per share) | $ / shares	$ 10.03