XML 60 R46.htm IDEA: XBRL DOCUMENT v3.3.1.900
Income Taxes - Additional Information (Detail) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2016
Dec. 31, 2015
Operating Loss Carryforwards [Line Items]    
Alternative Minimum tax credit carryforwards   $ 2.1
Internal Revenue Service (IRS)    
Operating Loss Carryforwards [Line Items]    
NOL carryforward assets and Research and Development (R&D) credit carryforwards   $ 11.3
NOL carryforward assets expiration date   2029
R&D credits expiration year   2035
Federal    
Operating Loss Carryforwards [Line Items]    
Tax examination description The Company remains subject to examination by Federal, Maine, Massachusetts, and New Hampshire tax authorities for the tax periods ended December 31, 2012; December 31, 2013; and December 31, 2014.