Note 11 - Accrued Expenses

3 Months Ended

Mar. 31, 2019

Notes to Financial Statements

Accounts Payable and Accrued Liabilities Disclosure [Text Block]

11. Accrued Expenses

Accrued expenses consist of the following:

	March 31, 2019		December 31, 2018
Compensation and related expenses	$	2,563	$	4,446
Professional fees		1,810		1,989
Research grants		392		400
Clinical trial costs		419		577
Income taxes payable		1,296		385
Lease liability - current		1,075		–
Other		476		349
Total	$	8,031	$	8,146

Included in Compensation and related expenses as of

March 31, 2019

are the accrued and unpaid costs related to the retirement of the Company’s former Chief Executive Officer as of

March 9, 2018.

On the same date, the Company and the former Chief Executive Officer entered into a release agreement related to terms in his employment agreement. Under the terms of these agreements, the former Chief Executive Officer is entitled to receive from the Company, as a result of his retirement, aggregate benefits of

$1.7

million over the

18

-month period subsequent to

March 9, 2018,

among other benefits. The unpaid amounts under these agreements are included in accrued expenses. As more fully described in Note

6,

all of the former Chief Executive Officer’s outstanding equity awards vested in full and became exercisable upon his retirement.