9. Accrued Allowances (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Accrued allowances consist of the following
Accrued returns allowance	$ 21,681	$ 18,314
Accrued managed care rebates	17,221	21,374
Accrued price adjustments	10,766	13,860
Accrued government program rebates	6,641	7,413
Total	$ 56,309	$ 60,961

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant