Share Based Compensation (Stock Option Activity) (Details)	3 Months Ended
	Mar. 31, 2016 $ / shares shares
Number of Shares
Balance at the beginning of the period (in shares)	465,401
Options granted (in shares)
Options exercised (in shares)
Options forfeited (in shares)	(3,416)
Options expired (in shares)	(63,997)
Balance at the end of the period (in shares)	397,988
Weighted-Average Exercise Price (Per Share)
Balance at the beginning of the period (in dollars per share) | $ / shares	$ 19.29
Options granted (in dollars per share) | $ / shares
Options exercised (in dollars per share) | $ / shares
Options forfeited (in dollars per share) | $ / shares	5.86
Options expired (in dollars per share) | $ / shares	33.51
Balance at the ending of the period (in dollars per share) | $ / shares	$ 17.12
Restricted stock units [Member]
Number of Shares
Balance at the end of the period (in shares)	3,750