Quarterly report pursuant to Section 13 or 15(d)

Contracts Receivable and Retainage - Additional Information (Detail)

v2.4.0.8
Contracts Receivable and Retainage - Additional Information (Detail) (USD $)
3 Months Ended
Mar. 31, 2014
Dec. 31, 2013
Mar. 31, 2014
Top 3 Customer [Member]
Customer
Long-term Contracts or Programs Disclosure [Line Items]      
Contract receivable $ 92,504,000 $ 98,579,000 $ 65,700,000
Number of major customers account for 71.0% of contract receivable     3
Percentage of contract receivable     71.00%
Reserve for bad debt included in contracts receivable balance $ 900,000