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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Nature of the Business and Liquidity (Details)	3 Months Ended
Nature of the Business and Liquidity (Details)	Mar. 31, 2019 USD ($) product segment	Jan. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 13, 2018 USD ($)	Mar. 31, 2018 USD ($)
Summary of Significant Accounting Policies Details [Line Items]
Segments \| segment	1
Cash and cash equivalents	$ 6,397,000		$ 9,705,000		$ 12,762,000
2023 Term Loan
Summary of Significant Accounting Policies Details [Line Items]
Deferred interest expense	2,000,000.0
Convertible Notes Payable \| 2023 Notes
Summary of Significant Accounting Policies Details [Line Items]
Amount still available on loan agreements	25,000,000.0
Convertible Notes Payable \| Ares Credit Facility
Summary of Significant Accounting Policies Details [Line Items]
Amount still available on loan agreements	15,000,000.0
Line of Credit \| Revolving Credit Facility
Summary of Significant Accounting Policies Details [Line Items]
Line of credit maximum borrowing capacity				$ 25,000,000.0
Face amount of the Notes	20,000,000		15,000,000
Remaining borrowing capacity	5,000,000.0	$ 10,000,000.0
Line of Credit \| Term Loan \| 2023 Term Loan
Summary of Significant Accounting Policies Details [Line Items]
Face amount of the Notes	72,020,000		$ 70,000,000	50,000,000.0
Line of Credit \| Term Loan \| Delayed Draw Term Loan A
Summary of Significant Accounting Policies Details [Line Items]
Face amount of the Notes				30,000,000.0
Amount still available on loan agreements	10,000,000.0
Line of Credit \| Term Loan \| Delayed Draw Term Loan B
Summary of Significant Accounting Policies Details [Line Items]
Face amount of the Notes				$ 15,000,000.0
Amount still available on loan agreements	15,000,000.0
Revolving Credit Facility
Summary of Significant Accounting Policies Details [Line Items]
Remaining borrowing capacity	$ 5,000,000.0
United States
Summary of Significant Accounting Policies Details [Line Items]
Generic products marketed \| product	34
Branded generic products marketed \| product	4
Canada \| Minimum
Summary of Significant Accounting Policies Details [Line Items]
Generic and branded products marketed \| product	27