Restricted And Escrowed Cash	12 Months Ended
Restricted And Escrowed Cash	Dec. 31, 2016
Cash And Cash Equivalents [Abstract]
Restricted And Escrowed Cash	3. RESTRICTED AND ESCROWED CASH At December 31, 2016, the Company had restricted cash of $10,777, of which $8,535 was included in other noncurrent assets and $2,242 was included in other current assets. Restricted cash included in other noncurrent assets relates to $7,035 of cash collateral issued for two letters of credit in connection with the termination of the Company’s former revolving credit agreement and $1,500 relates to cash held in escrow as security for the Company’s lease rental obligation under a long-term equipment operating lease. Restricted cash included in other current assets relates to cash held in escrow related to an outstanding lawsuit at our historical demolition business. At December 31, 2015, the Company had restricted cash of $3,742 of which $1,500 was included in other noncurrent assets and $2,242 was included in other current assets. Restricted cash included in other noncurrent assets relates to cash held in escrow as security for the Company’s lease rental obligation under a long-term equipment operating lease. Restricted cash included in other current assets relates to cash held in escrow related to an outstanding lawsuit at our historical demolition business.

The entire disclosure for cash and cash equivalent footnotes, which may include the types of deposits and money market instruments, applicable carrying amounts, restricted amounts and compensating balance arrangements. Cash and equivalents include: (1) currency on hand (2) demand deposits with banks or financial institutions (3) other kinds of accounts that have the general characteristics of demand deposits (4) short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments maturing within three months from the date of acquisition qualify.