XML 61 R48.htm IDEA: XBRL DOCUMENT v3.3.1.900
2004 Plan Options Available for Grant (Details) - shares
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
2004 Plan Options Available for Grant    
Balance at January 1 144,378 215,898
Increase in shares authorized 200,000 191,843
Granted (316,600) (382,000)
Canceled (93,972) (118,637)
Balance at December 31 121,750 144,378