The following tables present details of our unaudited condensed consolidated balance sheets as of March 31, 2020 and December 31, 2019:


(In thousands)	March 31, 2020		December 31, 2019
Notes receivable, net
ValidSoft	$	519	$	512
Yonder Media Mobile	—		3,355
Notes receivable	519		3,867
Current portion of notes receivable	519		3,867
Reserve against current portion of notes receivable	—		(3,355)
Notes receivable, net	$	519	$	512

The ValidSoft note bears interest at 5.0% annually and, pursuant to an amendment, matured on March 31, 2021. On April 6, 2021, the Company entered into an agreement with ValidSoft to accept $0.3 million as payment in full, which was received in the second quarter of 2021. Consequently, the ValidSoft note receivable was written down to that amount as of March 31, 2020.

The Company extended a $0.5 million promissory note receivable to Yonder Media Mobile ("Yonder Media") in 2018, bearing interest at 6.0% annually and maturing on May 26, 2020. In the first quarter of 2019, the Company extended three additional promissory notes receivable to Yonder Media aggregating $2.7 million with interest rates of 12.0% annually, with all principal and interest due on the maturity dates, which ranged from July 2020 to August 2020.

In July 2019, the Company and Yonder Media became involved in a legal dispute and the Company recorded a reserve of $3.4 million, representing the principal and accrued interest outstanding under the promissory notes as of June 30, 2019. In July 2020, the Company settled all the principal amounts due under the promissory notes by conversion of the amounts outstanding into shares of Yonder Media.


(In thousands)	March 31, 2020		December 31, 2019
Prepaid expenses and other current assets
Prepaid insurance and legal fees	$	667	$	762
Prepaid software license and support	497		890
Prepaid corporate taxes	179		214
Prepaid expenses-other	992		714
Valued added tax	514		591
Other receivables	73		451
Other assets	253		831
Prepaid expenses and other current assets	$	3,175	$	4,453


(In thousands)	March 31, 2020		December 31, 2019
Property, equipment, and software development, net
Furniture and fixtures	$	168	$	171
Computer, communications, and network equipment	17,060		17,450
Construction in progress	103		—
Software	4,072		4,150
Automobiles	12		13
Leasehold improvements	25		131
Software development	9,910		8,552
Property, equipment, and software development, at cost	31,350		30,467
Accumulated depreciation and amortization	(25,283)		(24,205)
Property, equipment, and software development, net	$	6,067	$	6,262

For the three months ended March 31, 2020 and 2019 expenditures for property, equipment, and software development were $1.9 million and $1.4 million, respectively; and depreciation and amortization recognized on property, equipment, and software development was $2.0 million and $1.2 million, respectively.


	As of March 31, 2020
(In thousands)	Gross Carrying Amount		Accumulated Amortization		Accumulated Impairment		Foreign Currency Translation Adjustments		Intangible Assets, Net
Intangible assets, net
Developed technology	$	26,829	$	(5,046)	$	(14,651)	$	(647)	$	6,485
Consumer relationships	25,300		(2,803)		(14,434)		(525)		7,538
Trade names	3,544		(927)		(1,757)		(116)		744
Total	$	55,673	$	(8,776)	$	(30,842)	$	(1,288)	$	14,767


	As of December 31, 2019
(In thousands)	Gross Carrying Amount		Accumulated Amortization		Accumulated Impairment		Foreign Currency Translation Adjustments		Intangible Assets, Net
Intangible assets, net
Developed technology	$	26,829	$	(4,800)	$	(14,651)	$	(623)	$	6,755
Consumer relationships	25,300		(2,409)		(14,434)		(511)		7,946
Trade names	3,544		(885)		(1,757)		(103)		799
Total	$	55,673	$	(8,094)	$	(30,842)	$	(1,237)	$	15,500

Amortization of intangible assets in the three months ended March 31, 2020 and 2019 was $0.7 million and $1.5 million, respectively.

The following table provides the estimated future amortization expense related to intangible assets held as of March 31, 2020:


(In thousands)
2020 (excluding the three months ended March 31, 2020)	$	1,770
2021	2,765
2022	2,715
2023	2,715
2024	2,715
Thereafter	2,087
Total	$	14,767


(In thousands)
Goodwill
Balance, December 31, 2018	$	100,428
Business combinations	37,821
Impairment	(125,923)
Foreign currency translation adjustment	(2,227)
Balance, December 31, 2019	10,099
Foreign currency translation adjustment	(194)
Balance, March 31, 2020	$	9,905


(In thousands)	March 31, 2020		December 31, 2019
Accrued expenses and other payables
Accrued selling, general and administrative expenses	$	7,977	$	2,720
Accrued salary and bonus	391		2,005
Accrued employee benefits	896		564

Accrued cost of service	1,642		627
Accrued taxes (including VAT)	2,884		2,637
Accrued interest payable	53		53
Accrued customer credit	83		3,393
Other accrued expenses	940		1,617
Accrued expenses and other payables	$	14,866	$	13,616