Business Combination - Summary of consideration paid (Details) - USD ($) $ in Thousands		3 Months Ended	10 Months Ended	12 Months Ended
	Feb. 18, 2019	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2019
Business Acquisition [Line Items]
Cash Consideration	$ 193,478		$ 193,894
Stock Consideration	172,349		172,307	$ 21,600
Contingent Consideration	65,803		58,268
Total	431,630		424,469
Adjusted Net Assets	5,910		5,910
Intangible assets			128,597	128,597
Goodwill	332,602		318,833
Intangibles	133,026		(4,429)
Deferred Tax Liability	39,908		28,871
Aggregate consideration			(7,161)
Decrease in Intangible assets	133,026		(4,429)
Decrease in Contingent consideration			7,500
Decrease in deferred tax liability			(11,037)
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments [Abstract]
Cash consideration			416
Stock consideration			(42)
Contingent consideration			(7,535)
Total			(7,161)
Goodwill			(13,769)
Intangibles	133,026		(4,429)
Deferred Tax Liability			(11,037)
Bonfire [Member]
Business Acquisition [Line Items]
Cash Consideration	51,068		50,971
Stock Consideration	50,078		50,078
Contingent Consideration	325		325
Total	101,471		101,374
Adjusted Net Assets	3,639		3,639
Intangible assets			22,870	22,870
Goodwill	81,964		81,665
Intangibles	22,668		202
Deferred Tax Liability	6,800		6,800
Aggregate consideration			(97)
Decrease in Intangible assets	22,668		202
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments [Abstract]
Cash consideration			(97)
Total			(97)
Goodwill			(299)
Intangibles	22,668		202
CityBase holders [Member]
Business Acquisition [Line Items]
Cash Consideration	64,261		64,507
Stock Consideration	41,560		41,518
Contingent Consideration	48,410		40,875
Total	154,231		146,900
Adjusted Net Assets	782		782
Intangible assets			45,914	45,914
Goodwill	119,741		106,357
Intangibles	48,155		(2,241)
Deferred Tax Liability	14,447		6,153
Aggregate consideration			(7,331)
Decrease in Intangible assets	48,155		(2,241)
Decrease in deferred tax liability			(8,294)
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments [Abstract]
Cash consideration			246
Stock consideration			(42)
Contingent consideration			(7,535)
Total			(7,331)
Goodwill			(13,384)
Intangibles	48,155		(2,241)
Deferred Tax Liability			(8,294)
eCivis [Member]
Business Acquisition [Line Items]
Cash Consideration	17,592		18,073
Stock Consideration	31,256		31,256
Contingent Consideration	5,859		5,859
Total	54,707		55,188
Adjusted Net Assets	(1,788)		(1,788)
Intangible assets			11,926	11,926
Goodwill	47,397		48,387
Intangibles	12,997		(1,071)
Deferred Tax Liability	3,899		3,337
Aggregate consideration			481
Decrease in Intangible assets	12,997		(1,071)
Decrease in deferred tax liability			(562)
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments [Abstract]
Cash consideration			481
Total			481
Goodwill			990
Intangibles	12,997		(1,071)
Deferred Tax Liability			(562)
Open Counter [Member]
Business Acquisition [Line Items]
Cash Consideration	10,958		10,958
Stock Consideration	17,455		17,455
Total	28,413		28,413
Adjusted Net Assets	(1,441)		(1,441)
Intangible assets			10,332	10,332
Goodwill	22,524		21,956
Intangibles	10,471		(139)
Deferred Tax Liability	3,141		2,434
Decrease in Intangible assets	10,471		(139)
Decrease in deferred tax liability			(707)
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments [Abstract]
Goodwill			(568)
Intangibles	10,471		(139)
Deferred Tax Liability			(707)
Questica [Member]
Business Acquisition [Line Items]
Cash Consideration	44,494		44,494
Stock Consideration	31,000		31,000	31,000
Contingent Consideration	9,311		9,311
Total	84,805		84,805
Adjusted Net Assets	3,652		3,652
Intangible assets			33,329	33,329
Goodwill	57,479		57,971
Intangibles	33,821		(492)
Deferred Tax Liability	10,147		10,147
Decrease in Intangible assets	33,821		(492)
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments [Abstract]
Goodwill			492
Intangibles	33,821		(492)
Sherpa [Member]
Business Acquisition [Line Items]
Cash Consideration	5,105		4,891
Stock Consideration	1,000		1,000
Contingent Consideration	1,898		1,898
Total	8,003		7,789
Adjusted Net Assets	1,066		1,066
Intangible assets			4,226	$ 4,226
Goodwill	3,497		2,497
Intangibles	4,914		(688)
Deferred Tax Liability	1,474
Aggregate consideration			(214)
Decrease in Intangible assets	4,914		(688)
Decrease in deferred tax liability			(1,474)
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments [Abstract]
Cash consideration			(214)
Total			(214)
Goodwill			(1,000)
Intangibles	$ 4,914		(688)
Deferred Tax Liability			$ (1,474)
Convertible Stock [Member] | Bonfire [Member]
Business Acquisition [Line Items]
Stock Consideration		$ 21,600
Convertible Stock [Member] | Questica [Member]
Business Acquisition [Line Items]
Stock Consideration		$ 31,000