PROPERTY AND EQUIPMENT

12 Months Ended

Dec. 31, 2018

Property Plant And Equipment [Abstract]

PROPERTY AND EQUIPMENT

7. PROPERTY AND EQUIPMENT:

Property and equipment consist of the following (in thousands):

	December 31,
	2018			2017
Land	$	1,006		$	1,006
Building and improvements		39,285			24,101
Office and lab equipment		55,333			33,269
Furniture, fixtures and computer related assets		6,941			4,431
Construction-in-progress		12,117			30,011
		114,682			92,818
Less: Accumulated depreciation		(44,943	)		(36,368	)
Property and equipment, net	$	69,739		$	56,450

Depreciation expense was $8.6 million, $4.9 million and $4.3 million for the years ended December 31, 2018, 2017 and 2016, respectively.