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Legal and U.S. Regulatory Proceedings (Details Textual) $ in Thousands	1 Months Ended	12 Months Ended
	Jan. 26, 2017 lawsuit	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Legal and U.S. Regulatory Proceedings Details [Line Items]
Accrued costs for clean-up and remediation		$ 122
Restricted cash included in other assets		$ 122	$ 124
Settlement terms		On December 4, 2015, Galderma Laboratories, L.P. and Galderma S.A. (collectively, “Galderma”) filed a complaint in the United States District Court for the Northern District of Texas against the Company alleging infringement of United States Patent No. 6,106,848 based upon the Company’s submission to the FDA of an ANDA seeking FDA approval to market clobetasol propionate lotion 0.05% before the expiration patent asserted in the complaint.
Estimated Clean Up Costs
Legal and U.S. Regulatory Proceedings Details [Line Items]
Cost for clean-up and remediation		$ 889
Subsequent Event
Legal and U.S. Regulatory Proceedings Details [Line Items]
Number of punitive class action antitrust lawsuits \| lawsuit	8