13. Accrued Allowances (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Accrued allowances consist of the following
Accrued returns allowance	$ 11,896	$ 9,691
Accrued price adjustments	44,100	32,945
Accrued government program rebates	6,682	9,968
Total	$ 62,678	$ 52,604