EDGAR Filing Documents for 0001437749-21-007153

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:

SEC Accession No. 0001437749-21-007153

Filing Date

2021-03-25

Accepted

2021-03-25 16:06:21

Documents

Period of Report

2020-12-31

Document Format Files

Seq	Description	Document	Type	Size
1	FORM 10-K	next20201231_10k.htm iXBRL	10-K	1425486
2	EXHIBIT 4.1	ex_217961.htm	EX-4.1	1590
3	EXHIBIT 4.6	ex_217962.htm	EX-4.6	16577
4	EXHIBIT 10.22	ex_217963.htm	EX-10.22	229291
5	EXHIBIT 10.23	ex_217964.htm	EX-10.23	78571
6	EXHIBIT 10.24	ex_217965.htm	EX-10.24	143223
7	EXHIBIT 10.25	ex_217966.htm	EX-10.25	15068
8	EXHIBIT 10.26	ex_217967.htm	EX-10.26	13350
9	EXHIBIT 10.35	ex_234426.htm	EX-10.35	10992
10	EXHIBIT 10.36	ex_234431.htm	EX-10.36	11130
11	EXHIBIT 21.1	ex_217968.htm	EX-21.1	4197
12	EXHIBIT 23.1	ex_217969.htm	EX-23.1	2478
13	EXHIBIT 31.1	ex_217970.htm	EX-31.1	15289
14	EXHIBIT 31.2	ex_217971.htm	EX-31.2	15374
15	EXHIBIT 32.1	ex_217972.htm	EX-32.1	7712
16	EXHIBIT 32.2	ex_217973.htm	EX-32.2	7721
22		capturecertificateoriginal.jpg	GRAPHIC	480515
23		capturenoteoriginal.jpg	GRAPHIC	126815
24		orgchartresized.jpg	GRAPHIC	26478
	Complete submission text file	0001437749-21-007153.txt		7468026

Data Files

Seq	Description	Document	Type	Size
17	XBRL TAXONOMY EXTENSION SCHEMA	next-20201231.xsd	EX-101.SCH	68416
18	XBRL TAXONOMY EXTENSION CALCULATION LINKBASE	next-20201231_cal.xml	EX-101.CAL	52114
19	XBRL TAXONOMY EXTENSION DEFINITION LINKBASE	next-20201231_def.xml	EX-101.DEF	379970
20	XBRL TAXONOMY EXTENSION LABEL LINKBASE	next-20201231_lab.xml	EX-101.LAB	334697
21	XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE	next-20201231_pre.xml	EX-101.PRE	413081
25	EXTRACTED XBRL INSTANCE DOCUMENT	next20201231_10k_htm.xml	XML	856844

Mailing Address 1000 LOUISIANA STREET SUITE 3900 HOUSTON TX 77002

Business Address 1000 LOUISIANA STREET SUITE 3900 HOUSTON TX 77002 7135741880