Annual report pursuant to Section 13 and 15(d)

Income Taxes - Additional Information (Detail)

v3.7.0.1
Income Taxes - Additional Information (Detail)
$ in Millions
12 Months Ended
Dec. 31, 2016
USD ($)
Income Taxes [Line Items]  
Net operating loss carryforwards expiration period Expire between 2020 and 2036
Maximum  
Income Taxes [Line Items]  
Provision for income taxes related to alternative minimum tax $ 0.1
Federal and State  
Income Taxes [Line Items]  
Net operating loss carryforwards $ 61.0