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Intangible Assets - Summary and Other (Details)	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended		18 Months Ended
	Nov. 30, 2013 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 item	Jun. 30, 2017 USD ($) item
Composition of intangible assets
Total gross amount		$ 18,024,000		$ 18,024,000		$ 17,743,000		$ 18,024,000
Accumulated amortization		(12,995,000)		(12,995,000)		(11,176,000)		(12,995,000)
Total		5,029,000		$ 5,029,000		$ 6,567,000		$ 5,029,000
Useful life/amortization period				60 months		60 months
Amortization expense		900,000	$ 900,000	$ 1,800,000	$ 1,800,000
Number of international distributors | item								2
Estimated amortization expense
2017		3,800,000		3,800,000				$ 3,800,000
2018		3,100,000		3,100,000				3,100,000
GMP royalty buyout
Composition of intangible assets
Total gross amount		17,500,000		17,500,000		$ 17,500,000		17,500,000
Non-compete agreements
Composition of intangible assets
Total gross amount		524,000		524,000		$ 243,000		$ 524,000
Amortization expense		$ 66,000	$ 23,000	129,000	$ 46,000
Number of international distributors | item							2
The amount of fair value of the non-compete provisions recorded as intangible asset				$ 500,000
Non-compete agreements | Minimum
Composition of intangible assets
Useful life/amortization period				1 year
Non-compete agreements | Maximum
Composition of intangible assets
Useful life/amortization period				2 years
Buy-out Agreement with GMP | GMP royalty buyout
Composition of intangible assets
Intangible asset purchase amount	$ 17,500,000
Useful life/amortization period	5 years
Buy-out Agreement with GMP | GMP Note Parties
Composition of intangible assets
Face amount at time of issuance	$ 17,500,000

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The amount of fair value of the non-compete provisions recorded as an intangible asset.

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Number of international distributors which the company entered into agreements with.

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Face (par) amount of debt instrument at time of issuance.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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