Commitments and contingencies.

No definition available.

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- Definition

Aggregate carrying amount of the estimated litigation liability for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.25)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Definition

Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

+ References

No definition available.

+ Details

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- Definition

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14557-108349

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349

+ Details

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- Definition

Number of plaintiffs that have filed claims pertaining to a loss contingency.

+ References

No definition available.

+ Details

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Legal Matters - Additional Information (Detail)			3 Months Ended		6 Months Ended	12 Months Ended
Legal Matters - Additional Information (Detail)	Jan. 14, 2016 Lawsuit	May 01, 2015 Lawsuit	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Jun. 30, 2018 USD ($) Lawsuit	Dec. 31, 2016 USD ($)
Commitments And Contingencies [Line Items]
Number of lawsuits filed \| Lawsuit					2
Total reserve remains					$ 10,000,000
Mediation Activities and Settlement Negotiations [Member]
Commitments And Contingencies [Line Items]
Pre-tax reserve recorded				$ 6,000,000
Warehousing, Marketing and Administrative Expenses [Member]
Commitments And Contingencies [Line Items]
Pre-tax reserve recorded			$ 3,000,000			$ 4,000,000
Inadvertent Violation under TCPA for Unsolicited Fax Advertisement [Member]
Commitments And Contingencies [Line Items]
Damages sought by plaintiff per violation					500
Willful Violation under TCPA for Unsolicited Fax Advertisement [Member]
Commitments And Contingencies [Line Items]
Damages sought by plaintiff per violation					$ 1,500
United States District Court California [Member]
Commitments And Contingencies [Line Items]
Number of lawsuits filed \| Lawsuit		1
United States District Court Illinois [Member]
Commitments And Contingencies [Line Items]
Number of lawsuits filed \| Lawsuit	1