Legal Matters	12 Months Ended
Dec. 31, 2016
Commitments And Contingencies Disclosure [Abstract]
Legal Matters	18. Legal Matters The Company has been named as a defendant in two lawsuits alleging that the Company sent unsolicited fax advertisements to the named plaintiffs, as well as other persons and entities, in violation of the Telephone Consumer Protection Act of 1991, as amended by the Junk Fax Prevention Act of 2005 ("TCPA"). One lawsuit was initially filed in the United States District Court for the Central District of California on May 1, 2015, and subsequently refiled in the United States District Court for the Northern District of Illinois. The other lawsuit was filed in the United States District Court for the Northern District of Illinois on January 14, 2016. The two lawsuits have since been consolidated for discovery, and assigned to the same judge. Plaintiffs in both lawsuits seek certification of a class of plaintiffs comprised of persons and entities who allegedly received fax advertisements from the Company. Under the TCPA, recipients of unsolicited fax advertisements can seek damages of $500 per fax for inadvertent violations and up to $1,500 per fax for knowing and willful violations. Other reported TCPA lawsuits have resulted in a broad range of outcomes, with each case being dependent on its own unique set of facts and circumstances. In each lawsuit, the Company is vigorously contesting class certification and denies that any violations occurred. Litigation of this kind is likely to lead to settlement negotiations, including negotiations prompted by pre-trial civil court procedures. Regardless of whether the lawsuits are resolved at trial or through settlement, the Company believes that a loss associated with resolution of pending claims is probable. The Company has recorded a $4.0 million, pre-tax reserve within the warehousing, marketing and administrative expenses line item in the consolidated statement of operations for the year ended December 31, 2016. The Company is continuing to evaluate its defenses based on its internal review and investigation of prior events, new information and future circumstances. Final disposition of the lawsuits, whether through settlement or through trial, may result in a loss materially in excess of the recorded amount. However, a range of reasonably possible losses is not estimable at this time. The Company is also involved in other legal proceedings arising in the ordinary course of or incidental to its business. The Company has established reserves, which are not material, for potential losses that are probable and reasonably estimable that may result from those proceedings. In many cases, however, it is difficult to determine whether a loss is probable or even possible or to estimate the amount or range of potential loss, particularly where proceedings may be in relatively early stages or where plaintiffs are seeking substantial or indeterminate damages. Matters frequently need to be more developed before a loss or range of loss can reasonably be estimated. The Company believes that such ordinary course legal proceedings will be resolved with no material adverse effect upon its financial condition, results of operations or cash flows.

18. Legal Matters

The Company has been named as a defendant in two lawsuits alleging that the Company sent unsolicited fax advertisements to the named plaintiffs, as well as other persons and entities, in violation of the Telephone Consumer Protection Act of 1991, as amended by the Junk Fax Prevention Act of 2005 ("TCPA"). One lawsuit was initially filed in the United States District Court for the Central District of California on May 1, 2015, and subsequently refiled in the United States District Court for the Northern District of Illinois. The other lawsuit was filed in the United States District Court for the Northern District of Illinois on January 14, 2016. The two lawsuits have since been consolidated for discovery, and assigned to the same judge. Plaintiffs in both lawsuits seek certification of a class of plaintiffs comprised of persons and entities who allegedly received fax advertisements from the Company. Under the TCPA, recipients of unsolicited fax advertisements can seek damages of $500 per fax for inadvertent violations and up to $1,500 per fax for knowing and willful violations. Other reported TCPA lawsuits have resulted in a broad range of outcomes, with each case being dependent on its own unique set of facts and circumstances. In each lawsuit, the Company is vigorously contesting class certification and denies that any violations occurred.

Litigation of this kind is likely to lead to settlement negotiations, including negotiations prompted by pre-trial civil court procedures. Regardless of whether the lawsuits are resolved at trial or through settlement, the Company believes that a loss associated with resolution of pending claims is probable. The Company has recorded a $4.0 million, pre-tax reserve within the warehousing, marketing and administrative expenses line item in the consolidated statement of operations for the year ended December 31, 2016. The Company is continuing to evaluate its defenses based on its internal review and investigation of prior events, new information and future circumstances. Final disposition of the lawsuits, whether through settlement or through trial, may result in a loss materially in excess of the recorded amount. However, a range of reasonably possible losses is not estimable at this time.

The Company is also involved in other legal proceedings arising in the ordinary course of or incidental to its business. The Company has established reserves, which are not material, for potential losses that are probable and reasonably estimable that may result from those proceedings. In many cases, however, it is difficult to determine whether a loss is probable or even possible or to estimate the amount or range of potential loss, particularly where proceedings may be in relatively early stages or where plaintiffs are seeking substantial or indeterminate damages. Matters frequently need to be more developed before a loss or range of loss can reasonably be estimated. The Company believes that such ordinary course legal proceedings will be resolved with no material adverse effect upon its financial condition, results of operations or cash flows.