XML 66 R49.htm IDEA: XBRL DOCUMENT v3.8.0.1
Stockholders' Equity Computation of diluted weighted average shares outstanding (Details) - shares
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]      
Weighted average shares outstanding - basic 52,523,272 52,276,951 52,274,573
Weighted average number diluted shares outstanding adjustment 1,793,375 1,705,224 1,783,199
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities 799,680 18,904 18,904
Weighted average shares outstanding - diluted 55,116,327 54,001,079 54,076,676
Antidilutive securities excluded from computation of earnings per share, amount 798,000 616,000 568,000