SOFTWARE DEVELOPMENT COSTS AND LICENSES

Details of our capitalized software development costs and licenses are as follows:



	March 31,
	2019				2018
	Current		Non-current		Current		Non-current
Software development costs, internally developed	$	14,809	$	434,712	$	19,338	$	515,761
Software development costs, externally developed	3,655		168,381		4,275		122,270
Licenses	10,416		343		9,671		1,338
Software development costs and licenses	$	28,880	$	603,436	$	33,284	$	639,369

Software development costs and licenses, net of current portion as of March 31, 2019 and 2018 included $378,030 and $638,055, respectively, related to titles that have not been released.

Amortization and impairment of software development costs and licenses are as follows:



	Fiscal Year Ended March 31,
	2019			2018			2017
Amortization of software development costs and licenses	$	342,870		$	101,437		$	222,801
Impairment of software development costs and licenses	7,426			1,060			20,166
Less: Portion representing stock-based compensation	(149,075		)	(24,610		)	(21,056		)
Amortization and impairment, net of stock-based compensation	$	201,221		$	77,887		$	221,911

During the twelve months ended March 31, 2019, we recorded $7,426 of software development impairment charges (a component of Cost of goods sold). The impairment charges relate to a decision not to proceed with further development of certain interactive entertainment software.