Directory List of /Archives/edgar/data/1000177/000091957412002820

Name	Size	Last Modified
0000919574-12-002820-index-headers.html		2012-04-17 16:07:33
0000919574-12-002820-index.html		2012-04-17 16:07:33
0000919574-12-002820.txt		2012-04-17 16:07:33
0000919574-12-002820-xbrl.zip	169459	2012-04-17 16:07:33
d1277738_ex1-1.htm	150156	2012-04-17 16:07:33
d1277738_ex2-1.htm	1661	2012-04-17 16:07:33
d1277738_ex4-5.htm	17601	2012-04-17 16:07:33
d1277738_ex4-8.htm	23193	2012-04-17 16:07:33
d1277738_ex4-9.htm	26664	2012-04-17 16:07:33
d1279700_20-f.htm	2085731	2012-04-17 16:07:33
d1280107_ex12-1.htm	8709	2012-04-17 16:07:33
d1280107_ex12-2.htm	8761	2012-04-17 16:07:33
d1280107_ex13-1.htm	5278	2012-04-17 16:07:33
d1280107_ex13-2.htm	5294	2012-04-17 16:07:33
d1283190_15-1.htm	2371	2012-04-17 16:07:33
FilingSummary.xml	29009	2012-04-17 16:07:33
Financial_Report.xls	985853	2012-04-17 16:07:33
g1277738_1.jpg	9668	2012-04-17 16:07:33
g1277738_2.jpg	9742	2012-04-17 16:07:33
g1277738_ex2-1.jpg	151717	2012-04-17 16:07:33
g1277738_ex2-1a.jpg	120172	2012-04-17 16:07:33
nat-20111231.xml	1152181	2012-04-17 16:07:33
nat-20111231.xsd	68019	2012-04-17 16:07:33
nat-20111231_cal.xml	72076	2012-04-17 16:07:33
nat-20111231_def.xml	188985	2012-04-17 16:07:33
nat-20111231_lab.xml	686459	2012-04-17 16:07:33
nat-20111231_pre.xml	383528	2012-04-17 16:07:33
R1.htm	34571	2012-04-17 16:07:33
R10.htm	21094	2012-04-17 16:07:33
R11.htm	22933	2012-04-17 16:07:33
R12.htm	22545	2012-04-17 16:07:33
R13.htm	39478	2012-04-17 16:07:33
R14.htm	10187	2012-04-17 16:07:33
R15.htm	48293	2012-04-17 16:07:33
R16.htm	9933	2012-04-17 16:07:33
R17.htm	14404	2012-04-17 16:07:33
R18.htm	54619	2012-04-17 16:07:33
R19.htm	9526	2012-04-17 16:07:33
R2.htm	65873	2012-04-17 16:07:33
R20.htm	6465	2012-04-17 16:07:33
R21.htm	18636	2012-04-17 16:07:33
R22.htm	32877	2012-04-17 16:07:33
R23.htm	62367	2012-04-17 16:07:33
R24.htm	13291	2012-04-17 16:07:33
R25.htm	46473	2012-04-17 16:07:33
R26.htm	15992	2012-04-17 16:07:33
R27.htm	17690	2012-04-17 16:07:33
R28.htm	8363	2012-04-17 16:07:33
R29.htm	139782	2012-04-17 16:07:33
R3.htm	122734	2012-04-17 16:07:33
R30.htm	31928	2012-04-17 16:07:33
R31.htm	17373	2012-04-17 16:07:33
R32.htm	19767	2012-04-17 16:07:33
R33.htm	37808	2012-04-17 16:07:33
R34.htm	44974	2012-04-17 16:07:33
R35.htm	12672	2012-04-17 16:07:33
R36.htm	23139	2012-04-17 16:07:33
R37.htm	14983	2012-04-17 16:07:33
R38.htm	28040	2012-04-17 16:07:33
R39.htm	40624	2012-04-17 16:07:33
R4.htm	16480	2012-04-17 16:07:33
R40.htm	36723	2012-04-17 16:07:33
R41.htm	13354	2012-04-17 16:07:33
R42.htm	10800	2012-04-17 16:07:33
R43.htm	41978	2012-04-17 16:07:33
R44.htm	32704	2012-04-17 16:07:33
R45.htm	92910	2012-04-17 16:07:33
R46.htm	42999	2012-04-17 16:07:33
R47.htm	31146	2012-04-17 16:07:33
R48.htm	41717	2012-04-17 16:07:33
R49.htm	21376	2012-04-17 16:07:33
R5.htm	76305	2012-04-17 16:07:33
R50.htm	45154	2012-04-17 16:07:33
R51.htm	36735	2012-04-17 16:07:33
R52.htm	16371	2012-04-17 16:07:33
R53.htm	111278	2012-04-17 16:07:33
R54.htm	27241	2012-04-17 16:07:33
R55.htm	16279	2012-04-17 16:07:33
R56.htm	22125	2012-04-17 16:07:33
R57.htm	49559	2012-04-17 16:07:33
R58.htm	102347	2012-04-17 16:07:33
R59.htm	5037	2012-04-17 16:07:33
R6.htm	9227	2012-04-17 16:07:33
R60.htm	30331	2012-04-17 16:07:33
R61.htm	26428	2012-04-17 16:07:33
R62.htm	28389	2012-04-17 16:07:33
R63.htm	19135	2012-04-17 16:07:33
R7.htm	123589	2012-04-17 16:07:33
R8.htm	37930	2012-04-17 16:07:33
R9.htm	43108	2012-04-17 16:07:33
report.css	2721	2012-04-17 16:07:33
Show.js	6423	2012-04-17 16:07:33

Directory Listing /Archives/edgar/data/1000177/000091957412002820