Subsequent Events
 12 Months Ended
Dec. 31, 2017
Subsequent Events [Abstract]  
Subsequent Events
SUBSEQUENT EVENTS
Acquisition of SENTEL Corporation
On January 23, 2018, we acquired SENTEL Corporation (SENTEL), a U.S. government contractor with expertise in logistics and supply chain management, engineering and advanced information technology solutions for spectrum management systems, sensor networks, border and perimeter surveillance systems and other detection systems, and multidisciplinary mission support for various intelligence community clients. The acquisition advances our strategy to be a leader in the converging physical and digital infrastructure market and enhances our information technology, technical solutions and logistics capabilities while expanding our client base to customers in the U.S. intelligence community. SENTEL’s customers also include the U.S. Army, U.S. Navy, U.S. Air Force, Federal Aviation Administration, and the Internal Revenue Service. Headquartered in Alexandria, Virginia, and founded in 1986, SENTEL has approximately 700 employees. For the fiscal year ended September 30, 2017, SENTEL generated revenue of $107 million. The purchase price of $36 million was funded by cash on hand and borrowings under our revolving credit facility. Values for the acquisition are pending the final purchase price allocations. We expect to finalize the allocation of the purchase price within one year of the acquisition, which is the measurement period.
Interest Rate Derivative Instrument
On February 5, 2018, we executed an interest rate swap contract with U.S. Bank to hedge a portion of our exposure to interest rate risk under the variable-rate portion of the Amended Term Loan. The contract has a notional amount totaling $15.8 million.