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Share-based Compensation	6 Months Ended
Share-based Compensation	Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-based Compensation	Share-based Compensation The Company accounts for its share-based compensation arrangements by recognizing compensation expense for the fair value of the share awards granted ratably over their vesting period. All compensation expense related to share-based compensation arrangements is recorded in sales, general and administrative expense and warehouse, processing and delivery expense. The unrecognized compensation cost as of June 30, 2015 associated with all share-based payment arrangements is $1,663 and the weighted average period over which it is to be expensed is 1.3 years.