XML 114 R97.htm IDEA: XBRL DOCUMENT v3.7.0.1
Employee Benefits (Narrative) (Details) - USD ($)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Maximum percentage of elegible compensation able to be contributed to the defined contribution plan 90.00%    
Employer match contribution   3.00% 3.00%
Amount contributed to the defined contribution plan $ 800,000 $ 700,000 $ 600,000
Share-based compensation expense $ 0 $ 0 $ 0
Restricted shares granted 546,895 462,024 453,987
Recognized compensation expense related to restricted shares outstanding $ 1,500,000 $ 1,300,000 $ 600,000
Unrecognized compensation expense, expected to be recognized in next fiscal year $ 1,000,000    
Unrecognized compensation expense, period of recognition 2 years    
Number of Options Outstanding 0 0  
Exercised, Number of Options 0 0 0
Expiration period of restricted shares 1 year    
Restricted Stock [Member]      
Unrecognized compensation expense related to restricted shares granted $ 1,600,000    
Maximum [Member]      
Vesting period of restriced stock 3 years    
Minimum [Member]      
Vesting period of restriced stock 1 year