CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2016	Dec. 31, 2015
Preferred Stock, Shares Authorized	40,000,000	40,000,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Special Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Special Stock, Shares Authorized	1	1
Special Stock, Shares Issued	1	1
Special Stock, Shares Outstanding	1	1
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	79,999,997	79,999,997
Common Stock, Shares, Issued	30,482,601	29,978,471
Common Stock, Shares, Outstanding	25,477,422	25,240,878
Treasury Stock, Shares	5,005,179	4,737,593
Preferred Stock One [Member]
Preferred Stock, Shares Authorized	0	2
Preferred Stock, Shares Issued	0	2
Preferred Stock, Shares Outstanding	0	2
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01