XML 93 R69.htm IDEA: XBRL DOCUMENT v3.8.0.1
Assets Held for Sale - Additional Information (Detail)
12 Months Ended
Dec. 31, 2016
USD ($)
Long Lived Assets Held-for-sale [Line Items]  
Gain on sale of real estate $ 338,000
Selling and Administrative Expenses [Member]  
Long Lived Assets Held-for-sale [Line Items]  
Gain on sale of real estate $ 338,000