Related-party transaction	9 Months Ended
Related-party transaction	Sep. 30, 2015
Related Party Transactions [Abstract]
Related-party transaction	14. Related-party transaction In connection with the acquisition of 3PI, the Company entered into a lease agreement effective April 1, 2014, with a limited liability company in which one of the former owners of 3PI is the sole member. The lease is for the land, buildings and certain equipment located at 3PI’s facilities in Darien, Wisconsin. The initial term of the lease is for seven years through March 31, 2021 and the initial annual base rent is $480,000 annually which is payable in equal monthly installments. The base rent is subject to annual increases as defined in the lease agreement. In the three and nine months ended September 30, 2015, the Company recognized expense of $120,000 and $360,000, respectively, in connection with this lease. In the three months and nine months ended September 30, 2014, the Company recognized expense of $120,000 and $240,000, respectively in connection with this lease. See Note 4, “Acquisitions” for further discussion of the acquisition. Since the time of the acquisition, the former 3PI owner is no longer employed by the Company and is no longer a related-party.

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.