Number of years subject to statute of limitations by major tax jurisdiction.

No definition available.

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- Definition

Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.

+ References

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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- Definition

Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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- Definition

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2018	Dec. 31, 2015
Goodwill	$ 32,466,000	$ 32,466,000
Cash, Cash Equivalents, and Short-term Investments	85,000,000
Stockholders' Equity Attributable to Parent	134,045,000	170,098,000	$ 99,098,000	$ 176,373,000	$ 67,721,000
Net Cash Provided by (Used in) Operating Activities	$ (39,111,000)	$ (22,655,000)	$ (13,014,000)
Minimum [Member]
Number of years subject to statute of limitations by major tax jurisdiction	3 years
Minimum [Member] \| Leasehold Improvements [Member]
Property, Plant and Equipment, Useful Life	5 years
Minimum [Member] \| Equipment [Member]
Property, Plant and Equipment, Useful Life	3 years
Maximum [Member]
Number of years subject to statute of limitations by major tax jurisdiction	4 years
Maximum [Member] \| Leasehold Improvements [Member]
Property, Plant and Equipment, Useful Life	10 years
Maximum [Member] \| Equipment [Member]
Property, Plant and Equipment, Useful Life	7 years